At the last SQL Saturday Chicago event a spoke at this year, I had the pleasure of meeting a guy by the name of Michael Kappel.

He has a pretty nice HttpModule for Google Analytics in this C# Codeplex project found here.

http://cstoolkit.codeplex.com/

Also check out his web site for some other interesting code he has placed out there such as an interesting Date differential class that is handy to keep around.

http://michaelkappel.com/examples/CS/Model/DateDifferential.htm

http://michaelkappel.com/

Cheers!
AJ