This was one of Comedy Central's best shows next to South Park, at the time!
2nd that!
One of the funniest things on TV

He's too mentally unstable to be relied on for a weekly show, drugs or just a nut case- who knows?
Has he done anything since then? Not even cameo roles or a stand up special aired anywhere, probably blamed on his bizzare interviews about going back to Africa after CC had to kick him to the curb because of his nuttiness
He probably makes some cash from the never ending repeats of his show on CC and whatever he pulls from any stand up gigs.
Had some insomnia and watched a couple of eps a few minutes ago and its dated enough that he spoke that if there was a black president he would never go to war lol, how wrong he was.

That may be his true passion, but it was sketch comedy that really launched his career.
He had some smaller roles in movies before that, but none that really put him on the map. Maybe "Half Baked", but even that wasn't the financial success that his show was.
If anything, I doubt he'd come back becuase they'd be too worried he'd walk again.

Don't hold your breath on that. I doubt Chappelle will ever come out with another sketch show on Comedy Central (or any other network) ever again. Stand up comedy is his true passion.

Why do you say that it's not coming back? I thought it was all set for another season late 2014?