Ever get the “Function evaluation timed out” message while trying to look at something in the debugger or quick-watch window in Visual Studio? Well, if needed, you can change the timeout settings by updating the corresponding values under HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\10.0\Debugger in your registry
Increasing Debugger Visualizer's Time Out in Visual Studio
P.S If you are interested in tools that make you more productive, and work with Sql Server Management Studio, you should check out SqlSmash.