Never won more than a few bucks on mega or powerball. I usually lose the tix before I cash them in since I only play when jackpots are really big. I buy for entertainment purposes. Gives me something to think about while I'm driving.
My college freshman son, on the other hand, really hit the Jackpot. He won free pizza for a year from a new franchise in town. He hasn't seen any limits yet, getting as many as 4 a night, and he orders at least one every night.