There's some question about whether Elena Kagan is qualified to serve on the Supreme Court because she's never been a judge. People complain that there isn't much a paper trail because she hasn't had to rule on cases and this makes both sides of the aisle nervous. There seems to be a lot that isn't known about her.
But if judging is what I think it is, then Kagan should be confirmed based on her answer in the following clip alone:
I wish you wouldn't, indeed.