At the moment (and that's as in, "very much subject to change") my plans for Sarah's works Christmas do involve going as John Sheridan. Mainly on the basis that something like this should be fairly easy to cobble together in a month, although on the negative side there is the worry that it might not look terribly futuristic/sci-fi out of context.
But anyway, yes. As anyone who knows me well will testify, I am the absolute spitting image of Bruce Boxleitner, oh yes, and there were no dissenting voices at the back there, I don't know what you're talking about.
(In desperation I could always go dressed like this, and then say I'm the Naan Ambassador. ???)