I've just written a little HttpModule which lets me see incoming requests in real-time, very interesting to see just what weird and wonderful clients are hitting this site - way more than I actually thought which is nice...also very interesting just how easy these are to write - I came from a world of servlets - where things were a little more complicated!
My favourite User Agent so far..."UltraLiberalFeedParser/2.5.3 +http://diveintomark.org/projects/feed_parser/" - I like this because I'm pretty ultra liberal myself :-)
Anyway, I'll make this available for download at some point - I'm working on a little web service / notification area app which pops a little notification window when certain 'tagged' visitors appear on your site.
Note, I have no actual reason for doing this, just seemed like a fun little project to flex my flaccid muscles on to learn a bit more about nice ways for Windows apps to interact with websites (in a 'fairly' useful manner)...