Great article on Flocasts.org on the "Black Cactus"...

If you've been around the American distance running scene, you can't help but walk away with a smile whenever you are around Abdi Abdirahman.In contrast to the quiet, introverted, almost too-serious demeanor that most elite distance runners present themselves as, he's a refreshing face in American distance running.Abdi's (left, /photo by Paul Merca) a serious contender for one of the three spots