New changes for “SNL” as ET gets a sneak peek inside their show plans. Then, what allegations are these star exes saying about each other. Plus, Sandra Oh has something to say to “Grey’s Anatomy” fans. And, Valerie Bertinelli honors Eddie Van Halen with throwback images including the moment they first met. Then, ET’s home exclusive with music superstar, Michael W. Smith. And, Robert De Niro shares secrets from his new movie, “The War with Grandpa” and what the Hollywood legend is like with his real grandchildren. Plus, we flashback to our first time on set of “Clueless” with Alicia Silverstone, Paul Rudd, and Donald Faison.

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