Hmmm ... if I had a Wii, I would have gotten "Escape from Bug Island" just to see how shitty it was (Electronic Gaming Monthly, or EGM, as it was called, gave it a "Shame of the Month" award.) I am also trying to find on YouTube a game that I think was called "Rouge Warrior". The one about the Navy Seal who fought the Russians ... I can't remember. However, I can't recall BUYING a game because I heard it was garbage. If I do, I'll edit it in.
However, I have done that when it comes to movies. I bought the Uwe Boll directed movie "Alone in the Dark" because I heard he was a terrible director. (In EGM, Seanbaby, who wrote his "Rest of the Crap" column, dedicated two whole pages in one of the issues to tearing up Uwe Boll and his movies.) To be honest, the movie, while it was bad, it wasn't THAT bad. Yes, I've never played an Alone in the Dark game, so I don't know how different the movie was from the game, but it wasn't THAT bad.
To be completely honest, if I had to choose between watching Avatar again or watching Alone in the Dark again, I would choose Alone in the Dark. Seriously.