Cool thread.
Music, definitely the 70s. All the genres and bands. Classic Rock, Zeppelin, The Who, Pink Floyd. Tons of R&B, Marvin Gaye too much to name really, all the early disco and mainstream disco. Nightclubs and dance Music. Then you had The Police and Van Halen getting their start and leading into the 80s. Plus the music opera movies. The amazing album art. Elvis and Frank even made comebacks. Just a great decade for music.
Movies I’d go with the 90s. All the Scorscesi classics Casino, Goodfellas. Saving Private Ryan. Braveheart. A bunch of great independent films. Swingers, Pulp Fiction, Reservoire Dogs etc...To me motion pictures hit their peak just before the CGI/Comic book turd storm arrived.
TV: 80s. A lot of classics. Cheers, Magnum, Dallas, would keep me busy stranded on an island.
Fashion is tough. I’m going with the early 60s, James Bond, Dr No, Vegas Rat Pack fashion. Classy and stylish with some attitude.
Politics, have to go with the 80s and President Ronald Reagan and Republican George Deukmehian as Gov of CA. We defeated the Soviet Union on Ice in 1980, and on the world stage by the end of the decade. The end of the Berlin Wall. And hey most had had a home computer by the end of the decade.