The best and worst celebs for autographs

This is more of a movie thing, but there are enough current and ex-TV stars on this list to include here. Who are the best and worst celebrities when it comes to autographs?

Personally, I think that there are some celebs who are bad autograph signers, and then there are some celebs who don't sign for very legitimite reasons: they've been burned by autograph seekers in the past, autograph seekers can be pushy, they're sick of signing a dozen things that just show up on ebay, etc. But anyway, here's the list. The best include George Clooney, Johnny Depp, Tom Cruise, and Matt Damon. The worst include Cameron Diaz, Teri Hatcher, and ... Alan Alda?!