One way is to use this Google proxy:
http://www.google.com/gwt/n

By browsing through there the sites you go to get seriously trimmed down... no flash or javascript and optionally no images.

And here's some other similar proxies with slight variations. I can't vouch for how well they work since I just found most of these right now. But they looked functional, and some even looked better than the Google one.

http://mowser.com/
http://www.phonifier.com/
http://www.skweezer.net/
http://urlwash.com/
http://mlvb.net/
http://jonathanhayward.com/m/