I have a confession to make- I have a frighteningly huge potbelly. I'm not even sure there are abdominal muscles still hidden somewhere deep in the pot. So I'd like to ask you all you fit lcers, what's the best video for ab work for those of us who can't really remember what it's like to see or even feel their ab muscles working???

Here is a sticky about AB problems, including an excellent web site - many members here use those exercises.
http://forum.lowcarber.org/showthread.php?t=164162

In case if you prefer videos, Tamilee Web's I Want Tose Abs - effective, but easy to follow
QuickFix - special feature: you can costumize your workout 10-20-30 min abs or alternating abs with other exercises
My absolute favorite: Gilad's Body Sculpting - intense, military style:-)

Most of abs videos show the same ab exercises - the difference is in intensity and the style of the instructor.

collagevideo.com offer a big variety of videos, with previews. (Use abs as keyword to search.) Unfortunately they are a little pricy - after finding the desired video, you can go to other sites to order the same videos. (I ordered many of my videos from amazon.com, or Gilad's from his own site - saving a lot compared to collagevideo)