Wow! I haven't laughed this hard in a while. For the last 7 years on Easter Sunday, people have gathered along Lombard St (said to be the "most crookedest street in the world" in San Francisco - pictured to the left). They come wearing a wide variety of gear and carrying a equally bizarre collection of plastic children's bicycles, most of which are destined to break when supporting more than 80 pounds.
This year, the event was held down Vermont St., which could be considered even more crooked, with much sharper and steeper switchbacks, though not quite as many (or as well landscaped) as Lombard St.
Anyway, it inspired my second YouTube video. (Shhh... I didn't get the musician's permission for the soundtrack...)
And, here's a great video from the 2007 race: