I went to WizKids games looking for a copy of the Munchkin card game after playing it and liking it. They had a lot of different games -- popular and also some "indy" games. The only negative is the prices were a bit on the high side.
Unfortunately, some of these games are hard to find in retail stores so it beats paying shipping!
It's a good place to go if you want something different, but you can probably get a better deal on "Monopoly" at Toys 'R Us.