I have most of the FFX and FFX2 soundtrack on my ipod. I own and WoW t-shirt and hat. I bought an ocarina just so i could play Ocarina of Time Songs (and i can). There are many more but i can't remember them at the moment, but i think my nerdiest moment was either when i found a GBA emulator on my school's computer network with FF Tactics Advance on it or when i bought Spore the other day, started playing it at 7.00pm and finished it at 12:30am, five and a half hours of utter nerdom. I regret nothing!
Edit: I can also quote every warcraft 3 units random quotes from memory "You can take me blunderbuss, when ye pry it from me cold dead hands!"