Oh! Tell me about it! I've ranted and raved on these boards about rollerbladers a couple of times. Worst ever:

Rollerblader on a cell phone. With a dog. And his arm in a cast. DUDE! Did you not learn from the broken arm incident?!?

Or the rollerbladers who think they're on SOOOOOOOOOOOOOoul Train and need to practice their routine side by side on the path. They treat "on your left" as an insult to their fabulousness, and take up more room in response.

I'm too cranky to ride the north section. Ever. Except maybe 5 AM. L.