Hi Aimee,
I have a couple suggestions for you. Tony Little's Target Training Stomach Reduction video is great. It's nothing fancy, just basic exercises which hit your abs from every angle. He has a time clock on the screen, so it is good for beginner to advanced. This is one of his older videos (you can probably get in on ebay for about 2 bucks). He acts very weird in his newer videos, but this one is good. :08 min. abs is also a very quick, but intense ab workout. I would say it's good for intermediate to advanced. I have about 90 exercise videos, so I've tried many ab videos, but these 2 are my favorites for abs.
Good luck with whatever you get, Laura