I need to find a name for my shop. Its going to have everything from roleplaying games to horror movie stuff. Basically a shop for nerd culture. What should I name it?

How about the name Otaku.

It actually means something like "someone who stays at home obsessing over his hobbies" in Japanese, but it's come to be used to describe anyone that is obsessed with anime/manga or geek life in general.

The only thing to watch out for is that, while it is seen as kind of a cool word used to describe nerd/geek/hacker/programmer in the US and UK, in Japan it can also be used to describe someone that is unusually obsessed with pretty much anything - so is also the word for stalker or creep.