Cop Out. Broken City, Reviewed.S  When Mark Wahlberg is at his
best, it doesn't look as if he's acting. In fact, it hardly
seems as if he's even thinking. Watch him in The Departed or I
Heart Huckabees and he comes across as a flawed regular guy who
just wants to do the right thing, even though his characters
aren't always the brightest. He plays lugs you can't help but
love. But that's when he's in a good movie. Put him in something
as generic as Broken City and it's as if someone painted
eyebrows on a sedimentary rock and threw it up on screen. His
winsome commonness becomes a liability. He just stands there,
inanimate.  In Broken City, Wahlberg plays Billy, a former cop
who left the force after he shot a suspect to death. (Billy
claimed it was self-defense, and the courts agreed.) Now he's a
low-rent private eye, taking pictures of wives cheating on their
husbands, when his old buddy Mayor Hostetler (Russell Crowe)
calls on him. The mayor is convinced that his wife Cathleen
(Catherine Zeta-Jones) is screwi