A very common question I get is: "Tim, what exercises should I do for my abs?" or something along those lines. "Should I supplement my daily workouts with additional ab exercises? Which ones are best? How many reps should I do? etc... How do I get ripped abs?
You need to understand that you can't remove the layer of bodyfat that's covering your abs by directly targeting the abs, although the popular media bombards you with constant nonsense to the contrary. So although when you do ab exercises, you "feel" the burn in your midsection, and later you're sore there, you've really wasted your time. The fat ain't goin anywhere, unless you start cutting out some of those starchy, insulin-spiking carbs you're eating, such as bread, cereal, pasta, tortillas, rice, etc...
Don't take my word for it though. Coach Charles Staley out of Las Vegas is a great source of no nonsense information on training. He's written a really good article on the subject (don't worry it's short) so take 5 minutes and read it, and you'll know the truth.