I would save Body Max 2!! Great music, SO fun, challenging, AND you get cardio & weights in 1 workout.
I would gladly let Jillian Michael's 30 Day Shred burn. Even if that part of the house wasn't on fire, I would throw it in there. I just can't stand that workout; it's boring, not challenging at all IMO, and her form is crap.
Tough question since I LOVE all of my Cathe's, but I guess I would save 4ds, although that is really 2 discs, but in one case. My Jari Love's I would let burn up (sorry JL fans!). Oh too late, I already got rid of those anyway.
Save:I would have to save IMAX2 w/ Cardio & Weights. You have everything you need on that video.
Fire:Though I get great results from KickMax, I hate to say I would not be upset that one was set on fire. It's a LOVE / HATE though. It's SO hard to get through those blasts, BUT I LOVE the feeling ( and all the sweat ) when I am done with that one.
I'd grab Muscle Max and Pyramids (sorry, I'm takin' them both!). If I had the chance I'd probably grap Bootcamp and High Step Challenge, too. Tae Bo would be a victim of the blaze. Although I'd really want to grab my Brian Kest, too (in both senses - ha!!)