http://www.scifigenre.com/itemDetail.aspx?nItemID=3304 Nothing says baller, nothing says bling bling like some gold dice. When you are rolling damage with these bad boys, people know!
http://www.hasbro.com/nerf/en_US/shop/details.cfm?guid=5598FF2F-5056-900B-10A3-7C917202BF8A&product_id=27683&src=endeca The Nerf N-Strike Barricade RV-10 is the newest battery operated ten shot Nerf weapon. Let the poor and the stupid cock their guns, you have automatic fire!
http://www.thinkgeek.com/index.shtml A gift certificate to think geek is a fantastic geek gift. I mean, if you cannot find something to buy there, at any price point, then you are not a geek.
http://store.penny-arcade.com/products/papodc08002 Penny Arcade is the premiere web comic and to have five prints hand picked by one of the creators is awesome. Merch from these guys definitely lets people know of your true geek nature. Display them proudly!
http://www.dacardworld.com/gaming/neca-dc-heroclix-75th-anniversary-booster-pack The new DC themed Heroclix set has just been released. Some of the old school characters are being remade and it's a great set to start on for new players.
BONUS! http://www.avatarfleshlight.net/ Yea, they can't actually call it an Avatar fleshlight but it's the "blue alien" fleshlight. Nothing says Merry Christmas like blue alien vagina replicators.