Anyone collect? Big names?

I have a pretty sizable collection that I am trying to downsize a bit to focus on more high value signatures (keeps me from buying a bunch of nobodys and preserves wall space).

If anyone else collects would love to hear about any items or experiences you have had in getting them.

I think the highest value ones I have are Madonna, Brando, Michael Jackson and David Bowie.

My personal favorite is a self portrait/sketch by Phil Collins of himself playing drums. It was owned by a pretty famous soccer player and he donated it to charity and I won. Love that thing.