Howdy,
I ran across what looks like a new spider (new to me at least) - here's a line from the logs:
216.243.113.1 - - [25/May/2002:03:00:10 -0400] "GET /robots.txt HTTP/1.0" 200 196 "-" "Gigabot/1.0"
Seems to be a "nice" bot, so far at least.
Peace,
David