Health monitoring in ASP.NET V2
Here's a couple of nice articles about the new HealthMonitoring feature in Whidbey:
http://weblogs.asp.net/dr.netjes/archive/2004/12/09/279101.aspx
http://msmvps.com/gbvb/archive/2004/09/15/13578.aspx
Definitely worth a read as this makes it super-easy to put custom logging code into your applications.