Here are a bunch of online resources.

Shopping

Asos: UK-based shop
Solestruck: Drool-worthy shoes
Romwe: Fashion-forward shop with free international shipping
Fred Flare: Most awesomest store to EVER hit the internet.
strapYA: Cute mobile charms/straps/stickers/etc. from japan
YesStyle: Asian fashion

Fun time wasters

Reddit: The heart of the internet
Orisinal: Cute addictive flash games
TheOatmeal: Funny web comics and quizzes
Weheartit: Images hearted from the web
Pupe Girl: Japanese Dress-up doll site
Calculate how many germs live on your keyboard
Blingee: Hilarious site to "bling" your photos with tacky gif animations
Face Recognition: Instant analysis of your face, and determines which celebrities you resemble the most.
Addicting games: Really. addicting.
Archive.org: Online internet archive
Rate my professor: Find your professor and rate them!
Rate my teacher
Your scene sucks
Shark Break
Polyvore: Mix + match outfits from the web

Movie/TV/Music

Songza: Great music playlists based on mood/time of day
Couchtuner: Stream TV shows online
Filestube: Movie/TV/music search engine
Television Without Pity: Hilarious TV re-cap site
IMDB: Internet Movie Database
Apple.com Trailers: New movie trailer listings @ Apple.com
Torrentz.com: Bit-torrent search engine
Last.fm: Tracks the music you listen to on your computer, and lists them on the site
Elbo.ws: Useful mp3 aggregator
TV Guide: Find your TV schedule online