I wasn't allowed to watch Ed, Edd n Eddy. (By the time that she probably wouldn't have cared, I was one of those edgy new teens that was "too cool" for cartoons)
I wasn't allowed to play Yu-Gi-Oh (Mom thought they were demonic, but Pokemon cards were A-Ok...And looking at the people at my school that played Yu-Gi-Oh, in retrospect, I thank her)
I also wasn't allowed to watch any movies that were rated 15 or 18, or play any games rated T or M (Ah, it was so strange, being an American living in England with an American N64 and Gamecube...)
I also wasn't allowed to use the Internet for anything other than Neopets or e-mail. (I abandoned Neopets when I was 10...)