Entertainment Tonight for Friday, January 15, 2021

Mega Millions mania! Tonight’s lotto would get you $750 million, but how would you stack up against Hollywood’s richest celebs? Then, Lori Loughlin’s husband in solitary confinement. Why his time behind bars is even worse than he though. Plus, the latest on “Saved by the Bell” star, Dustin Diamond’s, stage 4 cancer battle. Then, Betty White turns 99! How she’s celebrating her big day. Plus, ET’s “Batwoman” set takeover. Only we’re with the caped crusader herself. And, Rob Lowe’s Prince Harry encounter.