ooooooooooh... this is a hard one...everyone calls it the Napoleon jacket... you're gonna have to look at Dolce and Gabbana about 3-4 years ago and Burberry prorsum about a year and a half ago
these are virtually impossible to find
My friend has one by number (n)ine all in black and it IS the ultimate sex:
I get the Back To The Future jacket vibe from the Dior Homme one; it's that jacket he puts on in the future that doesn't fit and shrinks to his size :D
It depends on if you want a designer label or not.
Check out ebay and LARP costumes.
Or you could jump a bang geek and steal his jacket.
If you go for the last option, give me a head's up, I'm in the mood for some ultraviolence, eh droogs?
Sorry, Clockwork Orange has been haunting me lately.