Application Tool Manager (APM) is a great utility when programming for SharePoint 2010 (and general (IIS) web development) . Very handy if you want to attach your debugger to a specific w3wp.exe Process ID (PID)
The description on their website
This freeware application is a System Tray utility for providing quick access to common IIS tasks which are useful on a SharePoint development box. It may also be useful to others working with IIS. In essence, it enumerates the app pools on your box and lets you right click ‘em to bounce ‘em!
You can download the tool here<: http://www.harbar.net/articles/apm.aspx