"Probably the 70's." lol.
It may seem an odd thing but the fact that they brought back Apollo Creed's dad (the character and the same actor) to train Rocky strikes me as pretty cool. As a child of the 80's I'm always wanting those guys like Stallone to knock it out of the park. A lot of people didn't like it but I loved Assassins with him, Julianne Moore, and Antonio Banderas. That was the last great Stallone movie, IMO.