Some things sound really cool -- until you actually have to step up
and do them in real time. TUAW reader Gerald Buckley's story about
traveling with his iPhone strikes me as belonging to this class.

When he approached the American Airlines counter to use his iPhone as
a boarding pass, the coolness quotient for his entire trip got bumped
up several notches. It seems that he navigated over to AA.com using
Mobile Safari, signed in and displayed a PDF of his boarding pass on-
screen. The American Airlines counter agent in San Antonio "humored"
him and scanned the barcode as displayed on his iPhone. The scan
worked, and Buckley proceeded with his travels (much to the envy and
amazement of his fellow passengers, no doubt).