I occasionally use Log Parser 2.2 to do some work with IIS logs. I recently stumbled across a tool to use in conjunction with Log Parser. It’s called Log Parser Studio. The Exchange team blog has a nice overview of what the tool can do. It’s a nice tool to have in your toolbox for SharePoint troubleshooting.
Download - http://gallery.technet.microsoft.com/Log-Parser-Studio-cd458765 Overview - http://blogs.technet.com/b/exchange/archive/2012/03/07/introducing-log-parser-studio.aspx