Dozens of times would be fine. Frozen was released on DVD in March, which means we passed dozens of times four months' ago.
Frozen is a good movie and it's pretty cute watching my girls sing the more popular songs karaokee style on their microphone and amp, but the devotion of kids everywhere to this movie and its soundtrack is unreal. Mark my words now, but every girl between the ages of 4 and 10 will be Elsa or Anna for Halloween.
My Daughter was so entranced with Frozen that my wife had to download a cam-bootleg (Apparently people still do that) in January just so that she would stop.
WRT Other kids movies: Agree on Miyazaki's work, though it can be heavy and bloody (E.G. Naussica or Mononoke). Aside from Ponyo/Howl/Spirited Away/Naussica/Totoro they've enjoyed Porco Rosso and The Secret World of Arietty (though Miyazaki did not direct that one). Wreck it Ralph, Tangled, and Frozen are also big and I like them because they focus on theme's beyond standard Disney movies. Ralph is a movie with very heavy social commentary undertones. I'm actually pretty convinced that Frozen - apart from being a story about how love does not have to be romantic love - is in some way an allegory about mental illness. Tangled is obviously about learning how to deal with abusive relationships and be self sufficient.
For kids shows though - that everyone can watch, it's hard to beat My Little Pony: Friendship is Magic. Aside from having a compelling story that is consistently well written, the characters are dynamic and it constantly pokes fun at its own saturday morning special-esque tropes.