My Sister Sam at Amazon
I found out something interesting. If you type "My Sister Sam" (or any other t.v. show unavailable on DVD) in the search box, it brings up a sypnosis of the show (like IMDB does), yet you can enter your e-mail address and they will let you know when it's available. Amazon is also using the e-mail addresses to convince the studios to release it.
http://www.amazon.com/gp/product/B00005JO31/002-4500317-1489667?v=glance&n=130
Milk SUCKS! Got BEER?!