Erich Friedman wins the Geek of the Decade award. The math professor at Stetson University has posted a massive web page that lists a special attribute for hundreds of numbers from 0 to 9999. Some examples:

8 is the largest cube in the Fibonacci sequence. 26 is the smallest non-palindrome with a palindromic square. 229 is the smallest prime that remains prime when added to its reverse. 375 is a truncated tetrahedral number. 750 is the Stirling number of the second kind S(10,8). 2801 = 11111 in base 7. 3599 is the product of twin primes. 9999 is a Kaprekar number.

(Thanks to Plastic for this one!)