I prefer Pilates over Yoga, and my 2 favorite Pilates videos are:
1. 10 minute solutions Slim & Sculpt Pilates--this DVD has 5 different 10 minute workouts (upper body, lower body, abs, total body, and flexibility) and you can pick and choose which ones you want to do and the order that you want to do them in. Or you could do all 5 of them for a 50 minute work-out. I usually do three at a time b/c I try to squeeze them in while my daughter is napping. You do need a resistance band, but I received 2 free ones when i got the DVD.
2. The Burn and Firm Pilates DVD by Crunch is also pretty good. It has more cardio with it and uses 3 pounds weights for added resistance. It's also pretty fun (if working out can be called fun) b/c of the mambo and merengue moves it incorporates.
I don't do Yoga as often as i do the Pilates, but these are my 2 favorite Yoga DVDs:
1. Natural Journeys' Sacred Yoga (for beginners) with Vinyasa Flow
2. Natural Journey's 20 minute Yoga Makeover sculpted buns and thighs with Sara Ivanhoe.
J.