Frank Sinatra , but not Dean Martin (too wefty)
Jeremy Clarkson and James May, but not Richard Hammond (boy band-tastic)
Almost any rugby player except Sebastien Chabal (just too big)
George Best, anyone from the 1966 World Cup squad and Gazza, but very few other football players (in fact, having a man-crush on Freddie Ljungberg is pretty much proof that you're on the other bus. It's not a man-crush, it's a crush-crush.)
Tony Soprano and all Corleones except Sonny (perms are bad, mmkay?)
Terry Wogan (he's earned it, the poor man, after all those years failing to get a decent drink at the Eurovision Song Contest)
Gordon Ramsay, Heston Blumenthal, and Hugh Fearnley-Whittingstall but not Gary Rhodes (that hair!) or Anthony Worrall Thompson (he leers like a drunk uncle).
Comedians are pretty much all OK except for Russell Brand (looks too much like that Goth girl you snogged once at a party)
Actors - now there's a wide open field. The very fact of being an actor is less manly than being, say, a brickie or a soldier, but here are a few that seem to have it all (and I'm only going for British/Irish and Alive or there are far too many!) : Peter O'Toole (last of the great drinkers), Sean Connery, Daniel Craig, Clive Owen, Bob Hoskins, Ray Winstone, Gary Oldman, Tim Roth, Bill Nighy (king of the sneer)..