I capped on Code Review today, but I had a curious revelation in doing so. I accepted one of my ancient answers on a question of mine that never got any others, and had another answer be accepted. I thought that accepting my own answer would not add to the rep cap buffer, but I earned 219 rep, 4 above the 15 point buffer created by the other accept. Is this a bug, or is it planned to do this?
The rep limit only limits rep gained from up votes on question and unaccepted answers.
Bounties and accepted answers are exempt from the limit; not just the 15 from the accept, but all the UVs after it is accepted too. (Hence how folks like Jon Skeet always get more then 200)
However all up votes "lost" to the rep cap on unaccepted answers will not be given out once the answer is accepted.