I really don't enjoy abdominal exercises, I just hate that burning feeling in my gut that comes from repetitive action like that. It's weird because I really like using the core isometrically in yoga.
Anyway, I found this video that does 8 minutes of ab work, but it's cool because every 45 seconds they change it up. I can do anything for 45 seconds!
It's also really cheesy which I like.