The Elevator Pitch
A colleague of mine just sent me this HBS Elevator Pitch Generator. It is a nice tool, focused on "explaining yourself, your business, your goals and your passions."
If you do an elevator pitch, I think it should be focused on three things: the size of the market, the job-to-be-done you are targeting (i.e. your customer's problem), and how you get the done done better (i.e. your solution).
If you can quickly explain your customer's job and why it is difficult, frustrating, and time-consuming to execute, you will likely get your audience's attention.