A question on a similar vein I once thought up but forgot to ask on LW:

Omega offers to give you $X, but he will kill you one year from now. What's the minimum value of X for which you'd accept? What if it's one month? Ten years? Thirty years? (No, he isn't going to tell you anything about whether cryonics will work. Also, he promises not to tell anyone about your deal (when you die it'll look like you had a heart attack or something) unless you try to buy life insurance.)