Ah, we all have had an ex, or at least known someone who knows someone who’s had an ex that believed that the earth truly revolved around them. And indeed the entire relationship was about making said ex happy at any cost. But mostly, to the detriment of the other partner. Good riddance when you get rid of them though.
1Gloria Gaynor -I Will Survive
2Avril Lavigne - My Happy Ending
3JoJo - Leave (Get Out)
4Kelly Clarkson - Since U Been Gone
5Destiny's Child - Survivor
6Beyoncé - Irreplaceable
For B&R, Val Kilmer dropped out as Batman, and was replaced with George Clooney, who at the time was an up-and-coming star, shooting the movie and ER at the same time.