Sites to look at besides here?
LOL. If you check out your hyperlinks page we do have some great ones listed. I think it all depends on what size customs you are talking about too. Yakface is another good customs website that is very people friendly, facebook just has a ton of custom artists with pages (Tankster, Ratfink, Packratstudios, Luke Sprywalker, Lucasclones, etc.). Brian (Darth Daddy) also shows how great custom blogs can be (customsforthekid.blogspot.com) and he regularly features artists and websites you can find great custom work at. I also higly recommend dioramaworkshop.com with Frank Diorio. I know I am forgetting some, but this might get you started.
Also for one to one costume like work replicapropforum is daggone nice too.