If you are a netflix member and have a computer that can support it, you can watch videos online... they have lots of exercise ones on there... lots of Crunch, 10 minute solutions and Jillian Micheals (from the biggest loser) along with some others.
Where my computer is there is no room for working out, but I just discovered that I can pull the monitor out onto my keyboard tray and turn it and can see it from the main section of my living room
!! I was thinking just over the weekend "I wish I had more workout videos" but money here is usually tight (the joy of being a stay at home mom!) to buy more! I guess my video collection just multiplied big time!
I don't have room near my PC, either...but I like being able to try out workout DVDs through them, and watching things like Xena on my PC 
