If you ever had trouble describing your life's research, for a little levity and brevity you might want to check out lolmythesis.com, the dissertation humor site. Created by Angela Frankel (angelafrankel.com), a senior at Harvard College, her site is a place for thesis writers to sum up their "years of work in one sentence" with mostly humourous or sad results (depending on your level of cynicism).
Here are two recent one-liners to give you the flavor of the submissions.
"Women mathematicians in film are young and exceedingly attractive; male mathematicians in film are old, white, and socially inept (except Jeff Goldblum in Jurassic Park)."
"Whether Liberal, Conservative, or indifferent to politics, the Nasa natives hated it when other people stole their lands."
For more about Angela and her site, check out the Slate article "College Students' Thesis Topics Are Hilarious, Depressing" by Will Oremus.