Just was finishing the June 2008 AOPA Pilot Magazine and Captain Flanagan is profiled on the Pilots page.
At this point it is only available online to members of AOPA, and since it is a copyrighted publication I can not post the full article. However here is a little of the start of the piece which is fair use.
"When you board an airliner for that sardine-packed journey through the skies, someone in a uniform usually stands at the door and smiles mutely. Unless it’s Dennis Flanagan. A United Airlines captain, Flanagan has become a legend among travelers. He writes each first-class passenger a personal note on his business card. He snaps photos of pets inside the cargo bay to show owners the pet is OK."
AOPA members may access online.
http://www.aopa.org/members/files/pi.../plts0806.html