I spent some time banging my head trying to get Selenium to select an item from a Telerik RadCombobox for ASP.NET. It turns out I was very close but missing one small detail and that was to call mouseOver on the item I was trying to select before calling Click. I evetnually found the answer on the Teleik forums here. Falafel Software is a big fan of Telerik and it's nice to know their using Selenium to test their controls.