Eponah
I couldn't say for media (movies, TV, etc.), but I recall my friends and I referring to each other as "bitches" and using the word "bitchen" in the mid-late 70s.
In American Graffiti (set in 1963, filmed in 1973), Mackenzie Phillips calls the Beach Boys "Bitchin'", but as for the meme of calling annoying or difficult things "a bitch" or specifically the term "Payback's a bitch", I don't know if that was around back then. I think there's a possibility it might have been, at least maybe in the Black Culture of the day, although like most things it would then take Whites about 5-10 years to get hip to it.
airylli
I actually liked this episode, although maybe it's because I'm suffering from Mad Men withdrawal. And Annie still sucks. But I'm liking Sam more and more as he's become quite different from UK Sam in that he's a bit crazier - more of a goof than the despairing prick UK Sam was a lot of the time. I like it when the US version does stupid silly things like "I am Spartacus!"
As I said, I liked the light, breezy tone and easy camaraderie for much of the episode, but by the end it turned out to be just too much empty fluff. You just can't get get seriously invested in a show or its characters when absolutely everything, including a cop goading a guy on a ledge into jumping, is treated as background fodder for yuks. God knows I'm not looking for Battlestar Galactica here, but I'd like there to be *some* weight to the story, some indication that Sam doesn't just consider his marooning in 1973 to be nothing but one big good-time never-ending consequence-free party. Whatever happened to the animosity set up between Sam & Ray that we all thought was so promising? Apparently the Network decided that Ray was a popular character and so they made sure that he was made more "likable" and now he's just Goofy 70's Guy With A Mustache.