The Bathtub U-Boat, An Experiment in Large Scale Makerbot Printing.
Along with Westerns, Submarine movies are clinically proven to be universally enjoyed by the male population. Admit it, at some point you have walked around wanting to shout 'FIRE TORPEDOES' at the top of you lungs.
Well now you can, and look marginally less crazy while doing it.
**Update November 2013:** A repaired version of these files for use with Makerware and Sli3r are available here: http://www.thingiverse.com/thing:184992