Certainly the music, even though a lot of it stemmed from the 80s (and some of the bands are still going) it came into its own in the 90s. Nirvana, Smashing Pumpkins, Pearl Jam, NOFX, Fugazi, Soundgarden, Pennywise, Offspring (when they were still a cool thrashy punk band!), Alice In Chains, GreenDay, etc etc etc.
I'm also a big fan of a lot of 90's cars, that period seemed to be the peak before they all became over-run with electronic gadgets like traction control etc etc. Ford Escort Cosworth, BMW E30 and E36 M3, Nissan Silvia S13 and R32 GTR, Honda Civic EG6 and EK9, etc etc.
That said, as much as I loved the 90s, no way am I posting a pic of me with a massive long under-cut!!!!