Twiwatcher: noun; Title given to one who has watched the movie a ridiculous amount of times
Twiwatching: verb; The act of watching the movie at present
They probably suck, but oh well....
Twitastic: the act of being fantastic with a hint of Twilight
Twituber: A youtuber who vlogs/talks about twilight
Obsessive Cullen Disorder (OCD): Being obsessed with the Cullens/Twilight/anything in between.
[Thats all I can think of at the moment.]