Oh good lord, you all are killing me, some of these things I hadn't thought of in years!
LOL to 5.25 floppy (and green screens!), shoulder pads and Members Only jackets!!!!
I think you cut a pretty wide swath covering most of the biggies, I would add "Like, totally" under Cliches; all of the bands from micky80's thread not already mentioned to Bands; under Technology, VCRs (and remember Beta machines? that's what we had
), Atari / Pac-Man (video arcade boom in general), and compact discs; to movies I'd add "Breakin'", "Fame", "Footloose", "Risky Business", "Pretty in Pink", "The Breakfast Club", "St. Elmo's Fire", to TV I'd add Fame, Square Pegs, The Cosby Show, 21 Jump Street and Roseanne, under Things I'd add boomboxes; under Fitness, Reebok shoes; under Fashion, the camoflage craze, the tuxedo phase, the rounded collars with thin bows phase, the multi-colored rubber "Madonna" bracelets, and Madonna gloves, the digital watches that had "video games" on them, Swatch watches, the "2nd ear pierce", guys getting one ear pierced, collars up, cuffing jeans tightly at the ankle, ankle-zipper jeans, Jordache, Calvin Klein, Gloria Vanderbilt, Sasson jeans, clogs phase, topsiders phase, legwarmers, paisley print, neon and bright, crazy colors together on one shirt or outfit, headbands, for guys, those knit ties with the flat bottoms... I'm getting carried away... there were so MANY "fashion" trends that decade.... oh, and the Miami Vice look! Don't forget that! And add it to TV, too.
ETA: also add to TV "Hill St. Blues" and "L.A. Law"
ETA again: oh! and to Fitness (/TV) add "20 Minute Workout" -- remember that?