What to do in Geneva?

[angryswede]

Going to Geneva for work and will have a lot of free time to kill.
I have the eating, sightseeing and clubbing sorted, but are there any arcades or retro stores? Anything at all that a nerd should not miss in Geneva?

Thanks guys!

[JBC]

No idea, but the Large Hadron Collider is near there. Don't end up in Another World!