The HBR Blog had this insightful piece a few weeks ago: The 8 Word Mission Statement.
The challenge describe what you do in few than 8 words using this framework: verb, target, outcome.
Bad: leveraging strategic connections to propel growth. That is short and uses cool words, but conveys negligible meaning.
Good: give DC's kids access to good schools. (What the DC OSP does.)
What's yours?