J.B.
The most hard core weight training video set I know of is P90X. I have a friend who is an aerobics instructor and really into fitness and she says it is legit and really good. I think you need weights and a pull up bar to do it. The same company, beach bodies, has a more intro video series called the 10 minute Trainer, the instructor for both is Tony Horton. It looks really good, but doesn't actually require weights, they use bands and your own body weight like lunges for example. Of course you could always use weights while lunging if you chose to. Anyway both of those look great to me. I am prego right now but really looking forward to trying out the 10 minute Trainer after I have the baby, and hopefully being tough enough to graduate to P90X. So you might want to check those out online. Good luck!