I was saving Galaxy Quest for "movies that make you happy", but I'll have to find something else!

The key to the movie for me is Enrico Colantoni as Mathesar. He's the true believer, the one who lives the values the TV series preached, and is willing to suffer for those ideals. His courage shames the actors into truly occupying their roles.

And Alan Rickman..."By Grabthar's Hammer--I will avenge thee!" He made it sound like Shakespeare.