As far as I can figure, Sperm Cube is a French (of course) art project in which Philippe Meste is attempting to collect one cubic meter (or, if you like, 264 US gallons) of human sperm. On this page, you can see the artist himself with some of his, uh, work.
You can send away to become a, uh, guest artist. That is, they’ll send you a kit and you can send them your frozen donation. You can also buy shares in the project (to what end, I have no idea). Thanks to Jeff for sending this along.
DarrenBarefoot.com 
At today’s euro exchange rate, each share constitutes C$7.51/100 mL. I leave it to the imaginative reader to determine whether that is a worthy investment or not.
For those trying to convert:
1 cubic metre == 1 kilobukkake
Ha Ha! That’s funny filmgoerjuan! How many people do you think will get that?
Jackass would def buy that and pour it on Steve O