Android's browser does a good job at rendering complex web pages, but it doesn't have Flash support and it's really slow. You can zoom in, zoom out and move inside a web page. Here are some popular web sites rendered by an early version of Android's browser.
Useragent.org:
Gmail:
Google Maps:
NY Times:
Yahoo:
Digg:
YouTube video:
Adobe:
Acid2 Browser Test:
Apple's iPhone site:
iGoogle:
{ Idea by Luka. }