Sysinternals Releases New Tool -- ShellRunAs
Yet another new tool out of the former Sysinternals team. This one provides both a command-line as well as shell extension to make easier the process of running a process under different credentials.
By right-clicking an available executable, this tool can provide the following elevation prompt for running the process as another user:

Get your copy from the Microsoft web site at: http://technet.microsoft.com/en-us/sysinternals/cc300361.aspx

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