OK..there is no longer a time frame or limit to reveal the answer. 24 hours sounded good, but a person is either gonna come up with the first film immediately and work around to the connection....or they are gonna tap out because they don't know the actor or can't picture any film he's been in. So if you post it......you can reveal a solution whenever you want.
Dominic West and Gerard Butler as political rivals in 300
Gerard Butler and Jamie Foxx as adversaries in Law Abiding Citizen
Jamie Foxx and Stacks(SLJ) as adversaries in Django Unchained
Franco Nero (the original Django) remember different film for each link