What is a good workout to get great, tight abs?

Question

i'm tall and skinny and run a lot so i don't need to lose weight but i have this layer of fat over my abs. i need a good workout that can give me defined abs. i don't need a six pack but i'd like tighter abs.

Answer 1

i am trying this one now

http://www.youtube.com/watch?v=dMRG6hnMf...

but don't do them all in one exercise ,you will be feeling a little pain the next day