“Outlaw Posse” (** out of four) was a scattershot retro-Western set in 1908 about a lone gunslinger (Mario Van Peebles who also wrote and directed) who returns to the hills of Montana to retrieve buried gold but is pursued by a vicious villain (William Mapother) who wants it all for himself. Tongue-in-cheek effort from Van Peebles has attitude and style but doesn’t add up to all that much. Incidentally, this is not sequel to Van Peebles’ 1993 “Posse”, despite similar stories, characters, and even costumes. Strong supporting cast (including Whoopi Goldberg, Edward James Olmos, Cam Gigandet) are sorely wasted.