I remember:
- CompuServe chat rooms
- Playing Neverwinter Nights, the "original MMO" some say, on CompuServe
- Telnetting into my library to check out books and have them mailed to me instead of walking across town to the library.
- Usenet and FTP
- mIRC
- Randomly typing words or phrases and following them with .com to explore the web.
- Penny-Arcade
- Something Awful
- New grounds
- stickdeath.com
- Rotten.com
- Ogrish
- all the shock images like Goatse, Tubgirl, and Lemon Party
- Fark
- Digg
Heck, I even remember how I found out about the internet in the first place. I was reading the encyclopedia (I was following knowledge rabbit holes even before Wikipedia!) and got to the entry about it. Absolutely blew my little mind and I started begging my dad to show it to me since we had a computer.