Shaun T's Insanity is the perfect travel companion too as no equipment is required (except I use pushup bars) and the workouts are short.
SO, for those of you with the mentality of "Hey, I'm on Vacation. I don't need to work out." Well, that's probably when you need it most.
Get Insanity here and make your vacation great! Or get the Deluxe package here with extra workouts and Recovery Drink!
Here's my video podcast on this Insane Vacation!