I was listening to the Zen Tri podcast and heard a very funny made up conversation between an Ironman vs an Ultramarathon guy sitting on a train and thought you guys/gals would get a kick out of it, if you haven't seen it already.
I did a little googling this AM and found it for your enjoyment. It's around 6 minutes long.
I can't view it at work, but I'm pretty sure it's the one I've seen before. Very funny! There are a few videos like that around, like the one in which a man and woman are arguing about his training for am IM. She's calling him names and everything, and all he'll say is, "But I'll be an Ironman!"
"My satellite watch is also a virtual trainer it allows me to track my progress by displaying a little man on my watch who i compete against..... he is my best friend."