Today I did some 10-second and 30-second gesture drawings of figures. "Figures" is art speak for NEKKID HUMAN BODIES ZOMG!!!
I didn't have any actual nekkid bodies on hand, though, so I used the figures at Posemaniacs. That site uses muscle figures, for lack of a better term, so it's somewhat less shocking to my delicate sensibilities than real people with skin and everything.
This was actually a lot of fun, once I got started. If not for the annoyance of turning the pages in the sketch pad, I'd probably still be doing them.