Can you get any geekier than Bohemian Rhapsody played by an orchestra of vintage gadgets? I think not. From the YouTube page:

Please note no effects or sampling was used. What you see is what you hear (does that even make sense?)
Atari 800XL was used for the lead piano/organ sound
Texas Instruments TI-99/4a as lead guitar
8 Inch Floppy Disk as Bass
3.5 inch Harddrive as the gong
HP ScanJet 3C was used for all vocals. Please note I had to record the HP scanner 4 seperate times for each voice. I tried to buy 4 HP scanners but for some reason sellers on E-Bay expect you to pay $80-$100, I got mine for $30.

[via Arbroath]