I'm kinda shocked Mr Mom Collectibles video is on JazzInc's Catwoman page after the nonsense he pulled with the Batmobile. Huh.
Anyways, fun bit of trivia for ya, not sure if there's any truth to it. But here it is.
After Keaton's divorce, he dated Pheiffer for a while, which eventually fizzled out. He then tried to patch it up with his ex wife. Then he was cast for 89 Bat's.
As luck would have it, Pheiffer was strongly considered to play Vickie Vale, to which Keaton was uneasy with, as he used to date her and trying to get back with his wife.
So he essentially had her casting for the role canceled. Idk what happened after that with his ex wife but when Returns was green lit, Pheiffer was once again considered for a role in it as Catwoman.
I guess he gave in that time.