This is tough to narrow it down, and I can't pick an all-time favorite but:

Funniest - This Is Spinal Tap, Life Of Brian, Sleeper, After Hours

Saddest - Edward Scissorhands, Testament

Most Influential - Silence of the Lambs

Scariest - The Exorcist (when I was 14, it was!)>br>
Worst - The Whoopee Boys (don't ask), The Accidental Tourist