Psion
Adventurer
See, now my take on 3e profession is that it's useless. As written, the only thing it's used for is to generate a little money per game week. That's it. Sure, there are a host of implied uses for it, which also happen to overlap with other skills, but the rules-as-written offer no guidelines, advice, or actual rules regarding that.
Skills in general were a great opportunity in 3e that I generally feel was underplayed. Having played skills based games for years, I've always found the attitude that if there's not a printed use and DC for something you could do with a skill more than a bit baffling.
I'd like to say "the DMG says you can do this" to make it explicit, but I honestly don't know if it does. Generating your own tasks/DC is just something that is so obviously in the GM purview to me I never really looked for rules affirmation in 3e.