A gubernatorial candidate hires a wormy special assistant whose only job is to make sure the candidate's well-meaning but incompetent brother doesn't ruin the election.
 
A very poor attempt to recreate Tommy Boy (1995).
 
FUN FACT:  "Black Sheep" was a contractual obligation for Chris Farley. He had signed a two picture deal when he made "Tommy Boy", and he now owed them a second movie. Paramount was rushing to get a script out before he was able to get out of the contract. At the same time, Farley was being offered $3 million for the lead role in Sony's The Cable Guy (1996). The original "Cable Guy" script was tonally very different from the finished product, as it was more of a simple fun story. As Farley was about to sign the deal, somehow, the "Cable Guy" script made it to Jim Carrey, and he suddenly expressed interest in doing it. Because Carrey was the more bankable star, Sony let Farley go and went with Carrey instead, who turned it into a dark, black comedy. Sony was going to pay Carrey $20 million, the highest payday for an actor at that time. As for Farley, Paramount had exercised the option clause in his two picture deal with them, forcing him to do this film instead. Sony did pay Farley off for "Cable Guy", but Paramount only paid him under $1 million for this film.