Me, Myself & Irene (2000)

Charlie (Jim Carrey) is a Rhode Island state trooper with multiple profiles. He is otherwise mild-mannered and non-confrontational until somebody or something pushes him a little too far. That's when his maniacal alter-ego Hank takes over. Charlie is assigned to a routine mission to return alleged fugitive Irene (Renée Zellweger) to upstate New York, but they wind up on the run from corrupt policemen.