Insanity. Think P90X. Another one of those video exercises with ripped men and women smiling and yelling at you to "DIG DEEPER". I prefer Insanity because the only equipment you need is a water bottle. No money spent! (yes, I downloaded the videos)
It's supposed to be a seven day workout, but out of four days this week, I've completed two work outs. I blame it on my sore muscles from a day of Ultimate and my laziness.