A person who cannot wait for the next installment of their favorite movie to have one last adventure with the characters. Lately this has also branched out to video games and TV shows when no direct movie sequel can be created.
Sequel Nerd Comments:
I cannot wait for Tron: Legacy so we can see what happened to Flynn!
Back to the Future: The Game is going to be great, they even got Christopher Lloyd to be the voice of Doc Brown!
Indiana Jones and the Kingdom of the Kingdom of the Crystal Skull was decent but I hope they can make up for it with Indiana Jones 5!