I don't save a certain % of my check - I have my paycheck directly deposited into my savings account, and then transfer to my checking what I need to pay the bills plus maybe $100 extra in case I need to hit the ATM for cash.
All of my day-to-day spending I put on my AMEX card, which HAS to be paid in full each month.
I don't go out much, so I don't allot special money for that. I have season tickets for a minor league hockey team, which is 99.9% of the night's out and I pay for the tickets and parking upfront at the beginning of the season (but works out to cost me about $22/game). I may get a pretzel or beer at the game, but that comes out of my "extra" cash transferred with my bill money.
I don't spend a lot on food. I make several small shopping trips a week and buy just what I need for a couple days so I don't let things go bad and have to throw stuff out. I try to take lunch to work with me at least 4 days a week. I probably only spend $30-40/week on food.