IT'S the last week before the battle between the free-to-air networks is back in full swing.

The Australian Open action continues on Channel 7 while the Big Bash League reaches fever pitch on Channel 10.

SBS has several fascinating documentary series to keep you occupied, while Grant Denyer and Sandra Sully team up for Ten's annual Australia Day concert broadcast from Sydney.

And Georgie Gardner makes her Today show debut as the new co-host alongside Karl Stefanovic. She's a familiar face, but can she fill the void left by Lisa Wilkinson?

Here are this week's highlights of the small screen and why you should tune in:

Sunday January 21: The Secrets of Tutankhamun's Treasures, SBS, 7.30pm

The 1922 discovery of Tutankhamun's tomb remains archaeology's biggest moment. Found almost completely intact and packed with more than 5000 treasures, this beautifully decorated final resting place has unlocked the fascinating world of Tutankhamun and his 18th Dynasty - the most powerful kings and queens in all of Ancient Egypt. But despite almost a century of investigation by the best brains in Egyptology, they still hold big secrets.

Why you should watch: Dr Chris Naunton leads an international team of experts seeking to unlock the hidden secrets in Tutankhamun's treasure trove to answer the most pressing questions about this famous king: Who were his family? Who were his treasures originally made for? And how did he die?

Monday January 22: The Today show, Nine, from 5.30am

Georgie Gardner returns to the Today show, co-hosting with Karl Stefanovic who also returns to the desk for the first time this year.

Why you should watch: All eyes will be on Nine's breakfast show as former Today newsreader Georgie returns to fill Lisa Wilkinson's shoes. Will she and Karl have the chemistry needed to battle Sunrise?

Tuesday January 23: Fake or Fortune?, ABC, 9pm

Philip Mould and Fiona Bruce and the team are on the trail of two pictures brought to their attention by viewers, both believed to be by Paul Gauguin - one of the giants of 19th century art.

Why you should watch: As art detectives, Philip and Bruce investigate more thrilling cases of art world mystery, intrigue, and deception.

Wednesday January 24: Black Lightning, Netflix

Jefferson Pierce is a man wrestling with a secret. Nine years ago, Pierce was gifted with the superhuman power to harness and control electricity, which he used to keep his hometown streets safe as the masked vigilante Black Lightning. However, after too many nights with his life and his family on the line, he left his Super Hero days behind.

Why you should watch: This is the latest expansion of DC Comics' television universe and unlike Flash or Arrow, it's not a superhero origin story. Rather, it's the story of a middle-aged man rediscovering his powers. Perhaps more like Marvel's Luke Cage, it also deals with the issues of race, crime and social inequality.

Thursday January 25: The Truth About Your Health, SBS, 8.35pm

For those suffering from a chronic illness or degenerative disease, our rapidly evolving world is offering more promise for a cure than ever before. From stem cell therapy for memory loss to new arthritis therapies that could keep people healthier and active longer in life, this episode explores the evidence behind cutting-edge disease-management research, new breakthroughs and untested procedures while meeting the real patients who swear by them.

Why you should watch: This fascinating documentary series casts light on increasingly controversial procedures, diets and revived ancient therapies that are being sought by people desperate to dramatically alter their bodies or radically improve their health, and the booming industries that are more than happy to accept their business.

Friday January 26: Australia Day Concert, Ten, 7.30pm

Set around the stunning Sydney Harbour, Grant Denyer and Sandra Sulyly will present some of Australia's greatest musical acts, including singers Guy Sebastian, Anthony Callea and John Paul Young, as well as interviewing recipients of the Australian of the Year Awards.

Why you should watch: This harbour-side concert and fireworks display is a great way to cap off a day of backyard or beachside barbecues and celebrations of what it means to be Australian.

Saturday January 27: The Supervet, SBS, 5.35pm

Professor Noel Fitzpatrick and his team treat the hardest-to-cure animals with the latest cutting-edge treatments. This week, Noel goes to extraordinary lengths to save the life of Tiger the cat when his heart stops beating during recovery from an operation. And can Noel come up with a way of helping a French bulldog with a fractured elbow to walk again?

Why you should watch: There's no need to manufacture drama in this series, which follows the day-to-day cases of Dr Fitzpatrick's busy practice. Ranging from the funny to the heart-breaking, there's never a dull moment. 

IT'S the last week before the battle between the free-to-air networks is back in full swing.

The Australian Open action continues on Channel 7 while the Big Bash League reaches fever pitch on Channel 10.

SBS has several fascinating documentary series to keep you occupied, while Grant Denyer and Sandra Sully team up for Ten's annual Australia Day concert broadcast from Sydney.

And Georgie Gardner makes her Today show debut as the new co-host alongside Karl Stefanovic. She's a familiar face, but can she fill the void left by Lisa Wilkinson?

Here are this week's highlights of the small screen and why you should tune in:

Sunday January 21: The Secrets of Tutankhamun's Treasures, SBS, 7.30pm

The 1922 discovery of Tutankhamun's tomb remains archaeology's biggest moment. Found almost completely intact and packed with more than 5000 treasures, this beautifully decorated final resting place has unlocked the fascinating world of Tutankhamun and his 18th Dynasty - the most powerful kings and queens in all of Ancient Egypt. But despite almost a century of investigation by the best brains in Egyptology, they still hold big secrets.

Why you should watch: Dr Chris Naunton leads an international team of experts seeking to unlock the hidden secrets in Tutankhamun's treasure trove to answer the most pressing questions about this famous king: Who were his family? Who were his treasures originally made for? And how did he die?

Monday January 22: The Today show, Nine, from 5.30am

Georgie Gardner returns to the Today show, co-hosting with Karl Stefanovic who also returns to the desk for the first time this year.

Why you should watch: All eyes will be on Nine's breakfast show as former Today newsreader Georgie returns to fill Lisa Wilkinson's shoes. Will she and Karl have the chemistry needed to battle Sunrise?

Tuesday January 23: Fake or Fortune?, ABC, 9pm

Philip Mould and Fiona Bruce and the team are on the trail of two pictures brought to their attention by viewers, both believed to be by Paul Gauguin - one of the giants of 19th century art.

Why you should watch: As art detectives, Philip and Bruce investigate more thrilling cases of art world mystery, intrigue, and deception.

Wednesday January 24: Black Lightning, Netflix

Jefferson Pierce is a man wrestling with a secret. Nine years ago, Pierce was gifted with the superhuman power to harness and control electricity, which he used to keep his hometown streets safe as the masked vigilante Black Lightning. However, after too many nights with his life and his family on the line, he left his Super Hero days behind.

Why you should watch: This is the latest expansion of DC Comics' television universe and unlike Flash or Arrow, it's not a superhero origin story. Rather, it's the story of a middle-aged man rediscovering his powers. Perhaps more like Marvel's Luke Cage, it also deals with the issues of race, crime and social inequality.

Thursday January 25: The Truth About Your Health, SBS, 8.35pm

For those suffering from a chronic illness or degenerative disease, our rapidly evolving world is offering more promise for a cure than ever before. From stem cell therapy for memory loss to new arthritis therapies that could keep people healthier and active longer in life, this episode explores the evidence behind cutting-edge disease-management research, new breakthroughs and untested procedures while meeting the real patients who swear by them.

Why you should watch: This fascinating documentary series casts light on increasingly controversial procedures, diets and revived ancient therapies that are being sought by people desperate to dramatically alter their bodies or radically improve their health, and the booming industries that are more than happy to accept their business.

Friday January 26: Australia Day Concert, Ten, 7.30pm

Set around the stunning Sydney Harbour, Grant Denyer and Sandra Sulyly will present some of Australia's greatest musical acts, including singers Guy Sebastian, Anthony Callea and John Paul Young, as well as interviewing recipients of the Australian of the Year Awards.

Why you should watch: This harbour-side concert and fireworks display is a great way to cap off a day of backyard or beachside barbecues and celebrations of what it means to be Australian.

Saturday January 27: The Supervet, SBS, 5.35pm

Professor Noel Fitzpatrick and his team treat the hardest-to-cure animals with the latest cutting-edge treatments. This week, Noel goes to extraordinary lengths to save the life of Tiger the cat when his heart stops beating during recovery from an operation. And can Noel come up with a way of helping a French bulldog with a fractured elbow to walk again?

Why you should watch: There's no need to manufacture drama in this series, which follows the day-to-day cases of Dr Fitzpatrick's busy practice. Ranging from the funny to the heart-breaking, there's never a dull moment.