My favorite movie is probably "Willy Wonka and the Chocolate Factory". It makes me happy.
On a side note, I don't understand how "A Clockwork Orange" is so popular. No disrespect to anyone that likes it, but I just never really understood the hype.
I assume you are referring to the original, because yes, that film is brilliant. I even have the soundtrack aswell. Pure Imagination and The Candyman are excellent summer mp3 songs.
My own favourite movie? Watership Down, no contest.