Quite similar to the music question, what about films and television shows that make you happy?
I don't watch television that much but I watch the Simpsons. The Simpsons may have dwindled in quality of humour over the seasons, and this can be debateable in opinion, but when i watch it (like I am doing now) it just provides another focus on otherwise I just spiral back down to low periods. I doesn't fully take it away, just that it's something else to focus on for a short period of time.
As for films: The Lion King. I have watched this film so much that I have a deep connection to it. It was there on one of my lowest points and it's been there for me since.
LBT too is also a film that I can watch to make me feel slightly more better. However, these films only offer a short focus point.