Abs Anyone?

I did a super new ab workout tonight.  Click here to see it.  (I couldn't do the one w/ the captains chair.  But I've done that at the gym and it is great!)  I realized that my abs were growing accustomed to the same old  variation of 500 crunched I do every night.  This new routine was difficult and I did not get 500 in b/c my abs were killing me.  But I think the change is good and was necessary.  My old routine was getting stale and I haven't seen an improvement in my abdominal muscles in the past few weeks.  This is my problem area so I am all about a challenge.  I plan to do this new set of exercises for a few weeks.  Probably even the whole month they recommend them for.  Anyone care to join me?