If you have $3700 handy, you can buy this 6-foot tall, 110-pound, 40,000-brick Lego Mario, the biggest ever built. It took one week to plan, and 175 hours over 16 days to build.
You don't have to feel like a dorky geek for buying it, because the money will go to charity. So you can feel like a good-hearted dorky geek.
The auction lasts till November 1st, and the money will go to the Ronald McDonald foundation in Netherlands, "a dutch organization that arranges proper housing for relatives of hospitalized children, in the vicinity of clinics." [eBay via Brothers Brick]