Friends:

Sam's site
Phuc's blog
Danny's site

Essential Tools:

Gmaps Pedometer (amazing)
Google Earth (see the world)
Merriam-Webster (audio pronunciations)
IMDB (movies...)
Craigslist (community based buy/sell)
Craigslist+Gmaps (apartment finding)
Wikipedia (the world's information)
Emporis (info about buildings)
Man in Seat 61 (world train guide)

Audio/Video:

This American Life (all episodes free)
The Charlie Rose Show
The Daily Show (lots of clips)
National Public Radio
Pandora

News:

The New York Times
The Economist
Arts & Letters Daily
Wired
The Chronicle of Higher Education
The Wall Street Journal
BBC News
The Onion (satire)

Other stuff:

Chinese Language:

Dictionaries:
SunRain
Monash Wushu

Other Chinese things of interest:
Dongfang Chinese Education Institute
Hong Kong University of Science & Technology
Shanghai Jiao Tong University
Purdue Chinese Department