All the Visual Studio 2010 Keyboard bindings are available here for you to download. These are very helpful resources for a person who spends most of his days in Visual Studio. Go and grab it from http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=92ced922-d505-457a-8c9c-84036160639f
I personally like Ctrl+. which allows me to add the using statement without going to the top of the file. I use it quite frequently.