@infinitejesting I am at school atm, so I don't have the reference table for Wild Talents. I rolled a 3, though. So you gain whatever that is.
@Mckma Themes are applied to your character during creation. You do not need to spend ANYTHING - no feats, class features, skills, etc. - to gain a theme. Themes give you an encounter power that scales with your level: Gladiators get a heavy melee attack with a push, Athasian Minstrels get a poison attack, etc.
@Dom A player in my Revenge of the Giants campaign is running a brawler and he loves it. It is a pain in the ass to keep track of grabs and having a hand free and all that jazz, though. There is an actual gladiator build for fighters in the Campaign Setting, but you can play whatever you want.
Wild Talents is a ORE game. I have no idea what you are talking about. Seriously, though, Wild Talents are little psionic powers akin to the Wizard's cantrips that allow you to perform some minor effect. Engulf a small object in flames, listen in as if you were standing in the designated location, telekinesis, etc. They are minor, but are cool little extras that really emphasize the prevalence of psionics in Dark Sun.
As mentioned before, I am at school at the moment, so I cannot list all of these features in exacting detail. But once I get home (6:00PM ish EST) I can give you more detail.