<P> Despite some further missteps in the trial, Vinny shows that he is able to make up for his ignorance and inexperience with an aggressive and perceptive questioning style . Gibbons is unprepared, passive, and has a debilitating stammer, but Vinny quickly discredits the testimony of the first witness . Billy's faith is restored, and Stan fires Gibbons . </P> <P> Vinny's cross-examinations of the remaining two eyewitnesses are similarly effective, but on the trial's third day, Trotter produces a surprise witness, FBI analyst George Wilbur, who testifies that the pattern and chemical analysis of the tire marks left at the crime scene are identical to the tires on Billy's Buick . With only the lunch recess to prepare his cross-examination and unable to come up with a strong line of questioning, Vinny lashes out at Lisa, seemingly breaking off their engagement . However, Vinny realizes that one of Lisa's photos holds the key to the case: the flat and even tire marks going over the curb reveal that Billy's car could not have been used for the getaway . They could only have been made by a car with an independent rear suspension and positraction; Billy's Skylark does not possess these features, but the similar - looking Pontiac Tempest would . </P> <P> After requesting a records search from the local sheriff, Vinny drags Lisa into court to testify as an expert witness (both Vinny and Lisa had worked as mechanics in her father's garage). During Vinny's questioning, Lisa comes to the same conclusion and testifies that the only vehicle that could plausibly make the escape and be mistaken for Billy's 1964 Buick Skylark is a 1963 Pontiac Tempest with the same color and tires . Vinny re-calls George Wilbur, who confirms this . Vinny then re-calls the local sheriff, who testifies that two men who fit Billy and Stan's descriptions were just arrested in Georgia for driving a stolen green Pontiac Tempest with the same tires, and were in possession of a gun of the same caliber used to kill the clerk . Trotter moves to dismiss all charges, and the film ends with kudos trading and Vinny and Lisa bickering about their wedding plans . </P> <Ul> <Li> Joe Pesci as Vincent LaGuardia "Vinny" Gambini </Li> <Li> Marisa Tomei as Mona Lisa Vito </Li> <Li> Ralph Macchio as Bill Gambini </Li> <Li> Mitchell Whitfield as Stan Rothenstein </Li> <Li> Fred Gwynne as Judge Chamberlain Haller </Li> <Li> Lane Smith as Jim Trotter III </Li> <Li> Bruce McGill as Sheriff Dean Farley </Li> <Li> Austin Pendleton as John Gibbons </Li> <Li> Chris Ellis as J.T. </Li> <Li> James Rebhorn as George Wilbur </Li> <Li> Maury Chaykin as Sam Tipton </Li> <Li> Paulene Myers as Constance Riley </Li> <Li> Raynor Scheine as Ernie Crane </Li> <Li> Michael Simpson as Neckbrace </Li> <Li> Lou Walker as Grits Cook </Li> <Li> Kenny Jones as Jimmy Willis </Li> </Ul>

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