Kilgore661 is a Gigapanographer since March 2008, he is my cyber-friend too :)
Kilgore has created some wonderful stuff about GigaPan, which I really like. You can find the link to all of them on Kilgore's Website, but to make it easier, I mention some of them here:
Show random gigapans
Show gigapans near a given gigapan
View a graph of the scores or hits for an arbitrary set of gigapans
View a graph of the estimated number of members at gigapan.org
Who has uploaded the most gigapans?
Who has uploaded the most pixels?
Who uploads the largest gigapans on average?