Found in th Urban Dictionary:
1) n. A person who is frighteningly obsessed with Alan Rickman. 2) adj. Frighteningly obsessed with Alan Rickman. - also "Rickmaniacal" (adj.) Mr Rickman is an actor known for his parts in "Robin Hood: Prince of Thieves", "Blow Dry", and the "Harry Potter" films, among others.
Harold: What's that foros you're posting on?
Harriet: We can talk later, Harold. I'm with other Rickmaniacs right now!
Stan: What's wrong with your girlfriend?
Harold: She's turned all... Rickmaniac on me.
Stan: Whoa, tu can say goodbye to her. He's the reason my girlfriend swam to England.