Consumer stuff? Movie stuff? Retro? Test gear? Anything?
Movies.
Retro stuff (80's-90's)
I think the first time I got my hand on a Sony Discman, I was blow away. Nothing had ever felt or looked like it before.
The first ipods weren't nearly impressive for some reason. Maybe cause I knew what made them tick. There wasn't a lot of black magic like there was with CD's. Just some custom chips wrapped up in a idiot proof UI? Am I the only one?
Huge mixer consoles are sex as well.
And pro SD video equipment from the 90's was always amazing.
Most impressive thing I ever got my hands on was a few days in a full sized shuttle simulator.