Do you ever watch the odometer on your car when it switches over to unique numeric sequences? 1000, 10000, 20000, 20202, 25000, 33333, 99999, 100000, etc are all interesting numbers for me to see. I'll even mind the decimal point if it's cool enough looking. My wife thinks I'm crazy but I caught her watching 22222.2 cross the odometer on the new van.
My JoeUser.com score just did a similarly neat thing. My score rose above my rank (260/242). Nothing particularly special in the 250's range, but still a milestone of sorts for me.