What are some good websites for hold em odds and percentages?

[KSOT]

My friend keeps pestering me about the odds of such and such happening. I want a website or two that I can just link him to for reference. Anyone know of any good resources like that?

You know... a page that lists the odds of flopping a flush draw, the odds of it hitting, the odds of flopping a pair with AK, flopping a set, that kind of basic stuff.

Thanks!