Google

• Google (US)
• Gmail
• Google Maps (US)
• Google News (US)
• Google Books (US)
• Google Image (US)
• Google Scholar

• Apple Maps

Other Search Engines

• Bing (US)
• Yahoo (US)
• Wolfram|Alpha

Social

• Twitter
• Facebook

Video

• YouTube

Images

• Flickr

Movies

• IMDb
• Rotten Tomatoes

Music

• Last.FM

Mac

• Stack Overflow
• Mac OS X Hints
• MacUpdate

Reference

• Wikipedia
• Wiktionary

Shopping

• Amazon (US)
• eBay (US)

Web Services

• Shorten URL (Bit.ly)
• View URL in Google Cache