I had a coil go bad on me for no really good reason once....car just started, ran for 5 seconds and died on me. Very unpleasant but i fixed it myself later. Did you check to see if your getting a spark? When you turn the car to the on position, see if your fuel pump is turning on, should go on for 2 seconds. Stick your ear near the open gas tank fill hole and have someone turn the car to on. Should hear a little noise. If the pumps working chances are your getting fuel. You can always check by pulling the fuel line off of the engine too and see if fuel comes out when you try to turn the car over.

Check your spark next by taking a plug out and plugging it back into the spark plug wire, hold the plug on the engine block and have someone try to turn the car over. make sure the ground of the plug is touching a grounded part of the engine (valve cover should be fine.) Make sure your getting a spark. If you have spark and fuel, assumeing your timing belt is not broken then post back here.