House of Huxtables!

I'm having a bit of trouble falling asleep tonight, so I decided to let the tv lull me into a drowsy state. "The Cosby Show" is on right now, and I have made an interesting discovery. Sondra and Eldon's twins are named Winnie and Nelson. Very political, very clever. When I first saw the show, I was only ten or eleven. I didn't get the politics of the show; I just thought that Bill Cosby was funny. I think I could appreciate it more now. Which begs the question: why isn't this show on dvd yet? I mean, "Knight Rider: Season One" is out, and I'm not able to watch Huxtable hijinks? Someone's got their priorities mixed up.