The challenge of working on Horrible Bosses, according to screenwriters John Francis Daley and Jonathan Goldstein, was trying to make the film’s premise — three average joes plotting to kill their work supervisors — credible. Insert the heinous employers played by Kevin Spacey, Jennifer Aniston and a barely recognizable Colin Farrell, who drive their respective employees Jason Bateman, Charlie Day and Jason Sudeikis to premeditated murder.

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Horrible Bosses opens in theaters July 8, 2011 starring Jennifer Aniston, Jason Bateman, Charlie Day, Jason Sudeikis, Colin Farrell, Jamie Foxx, Kevin Spacey, Julie Bowen, Donald Sutherland, Lindsay Sloane, Kevin Pennington, John Francis Daley, Isaiah Mustafa