I don't have enough money to buy a lot of stuff, and so I haven't pursued much of it. My favorite character though is probably Superman, and I went to Metropolis, IL, in 2009. I met actors Phil Morris & Justin Hartley, visited the very impressive Superman Museum...it was a pretty cool experience overall. The only downside was that I went in the middle of June, and I wasn't expecting it to be so hot! I was drinking water for 2 days straight, about as fast as I could sweat it off.
I've also gotten to meet some celebs from "Smallville" at conventions over the years. I have signed items from John Schneider, James Marsters, Sam Witwer, and Laura Vandervoort.