The one below features Grey's Anatomy, The L Word, Lost Girl, Glee, Imagine Me and You, and I Can't Think Straight.... and I think I'm missing a couple? Anyway, it's funny.
I love the coming out moment featured from I Can't Think Straight:
[Leyla's father arrives home, sees Leyla and her mother in the kitchen]
Leyla (to her parents): I'm gay!
Leyla's Father: But I've only been gone two hours!