I've fallen in love with gerrit for code reviews. Gerrit lets me set up an automerge to the "main trunk" of the development if one person claims it works and two people eyeball the code. It's not a setup for everyone, but for my teams it's been absolutely brilliant.

If you supported auto-merging based on review criteria (preferably a functional test in addition to a code review requirement) I would switch in a heartbeat. Without that, I'll never even look at it.