It might have been the one where Ash dies at the end then pikachu starts trying to revive him while crying. I nearly cried at that. (Sorry I completely ADORE that film)
I always feel happy at the end of Legally Blonde, I think it's a real feel good fun movie and very uplifting since both Elle wins, and Justice is served to Velma from Scooby Doo so it's like a double happy ending.