The generals will never be original, but it's how you follow through with the specifics that can make it original. How many times have we seen a buddy cop movie? How many times has it been rehashed "Good Cop, Bad Cop", "Interracial Duo", "Clean cut, loose cannon", "cop, dog..", "Good Cop, Bon Cop

" , "Cop, Informant", "Cop, Criminal", etc, etc...
But how about Kiss, Kiss, Bang, Bang... it was awesome, hillarious, fresh, blah, blah, blah... it took a completely unoriginal concept and made something unique. Staying away from cliches or poking fun at cliches can sometimes be a solution.