Don't have a top 5 in each park, but here's what we must do in each park:
MK- Buzz Light Year, BTMRR, TTA, Carousel of Progress (mostly for a rest and AC, but really do love the show too), and HM.
EPCOT- Soarin', Spaceship Earth, Living with the Land, Ellen, American Adventure (I know, it's a show and not a ride, but it is fantastic!)
HS- TSM, Art of Animation drawing class, Lights, Motors, Action, Citizens of Hollywood
AK- When we go, we do A Bug's Life, the safari, Maharaha Jungle Trek, EE, and Kali River Rapids