Where Can I Find Abs Workout Reviews?

I am trying to figure out the best workout for my abs. I have seen that there are a ton of different workout videos geared towards the abs, and I am having a hard time making up my mind which one to buy and try. Can anyone tell me where I might be able to find some abs workout video reviews? That way I can find out which ones people think are not worth the time and effort and which ones really seem to work. I am hoping I can eventually get six pack abs, though I know this is really hard to do.