I find revising scenes I've let sit for a while easier than revising something I've just written. Problems leap out at me. The good writing just does it's job and moves me through the story without grabbing my attention. Anything--it doesn't matter how clever it is--that jolts me out of the story needs to be revised or deleted. Even the humor should feel like it belongs.
And, last night, I had a much better idea for an ending, so I guess I'll be re-writing that too. That's okay though. I knew my ending wasn't good enough when I wrote it, but I had more fun writing that scene than any other scene in the novel. I think I'll keep it as a deleted scene. Do any of you keep deleted scenes?
If you have a few minutes, this one is pretty good. :)