There are some of us that do du's and tri's on the the triathlon board (down a little on the main page). Swing by there every now and then for some du talk. I like du's, but prefer tri's (I'd rather get all the running over with at once instead of splitting it up). I did one a couple weeks ago as a team with my DH- a Formula 1 type- and it was a lot of fun. Unfortunately, there are more du's around here during the summer than tris, so sometimes I do one just because it's handy (well, and fun, too).
What's your favorite race you've done??