Are you looking for a quick workout? Are you looking for stronger abs? Try the 8 minute Abs workout. All you have to do to perform the 8 minute Abs workout is chose three different abdominal exercises, perform each one for 30 consecutive seconds, take a 30 second rest, and repeat that 4 times. For example:
30 seconds of crunches
30 seconds of reverse crunches x4
30 seconds of Russian twist
30 seconds of rest