Zucchini for me - although I'm not a huge fan of any member of the cucurbitae family. They've all got a taste (including the melons) that is overpoweringly strong to me that I just really can't stand. I think it's a genetic thing, like how some people detect a strong taste of soap in cilantro and other people don't.

Although, I guess it doesn't really matter if I taste good to myself or not, so maybe it doesn't matter?