“Gridlocked” (** out of four) was a mindless, derivative action thriller about a grizzled former SWAT leader (Dominic Purcell) who is forced to babysit a hard-partying movie star (Cody Hackman) when their police training facility is suddenly ambushed by terrorists (led by Stephen Lang). What begins as a mismatched buddy comedy similar to “The Hard Way” soon evolves into a bloody shoot ’em up similar to “Assault On Precinct 13”. Purcell is his usual one-note inexpressive self and Lang is unusually hammy but it’s worth half-a-star to see Purcell and main henchman Vinnie Jones in a hand-to-hand fight at the end. Not to be confused with 1997’s “Gridlock’d” with Tupac Shakur and Tim Roth.