I demo'd this module at DefCon. Essentially, it uses the session's current token to attempt to create a service on remote machines, using a UNC path pointing to the session host as the executable to avoid having to upload directly to each target.
Add a comment describing function prototype
Add current_user_psexec module
Tested against a 2k8 domain controller.
Remove superfluous method
Obsoleted by session.session_host, which does the same thing