There is no doubt that the sex tape made by Ray J with Kim Kardashian is the most famous sex tape ever. Many other celebrities tried to gain fame with a tape after they seen the success Kim Kardashian had. This web site shows you how to watch the original Kim Kardashian sex tape in full for only $1 (normal price is $29.95).
Another famous tape is Farrah Abraham sex tape and it seams it is way better than Kim tape.
You can also check out Myla Sinanaj sex tape. Same call it the anti Kim tape.