Next ET: TV Land's Epic 'MTM' Reunion!

Valerie Harper, Betty White, Ed Asner, Cloris Leachman and Mary Tyler Moore reunite for an epic Mary Tyler Moore Show reunion on Hot in Cleveland! 

Pics: Beloved TV & Movie Casts, Reunited!

Plus, we're on the set of Katy Perry's new music video for her hit single Roar.

ET is all-new Wednesday! Check your local listings.