I've seen every bit of Friendship is Magic at least twice - that includes the eight shorts, the movie and the two specials. I've also seen each episode of Friendship is Forever twice. The same with Equestria Girls - all the movies, specials and shorts at least twice.
I'm currently having my third complete run through, rewatching all of Friendship is Magic, Equestria Girls and Friendship is Forever in chronological order. The most recent episode was A Royal Problem earlier today.