Yes! - Search in Add Reference Dialog, Get the Pro Power Tools for VS2010

A picture says a thousand words. Check out this “Add Reference Dialog:/ If you look at the top right, you will see a textbox where you can type to filter the list. Yes!!

 

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Where do you get this? Download the Visual Studio 2010 Pro Power Tools. You can find it via the Extension Manager or just visit the site. There is a whole bunch of other features, but this is my killer one.