A simple Chrome Extension which hides the cruft on the Twitter website. There are also options to show or hide 'Twitter Trends' and the 'Who to Follow' feature.
Providing you use Google Chrome, you can download a packaged version of the extension here: http://bit.ly/cogAuN
If you want to contact me regarding this extension, feel free to drop me an email at: paul@ocodia.com or ping me on Twitter: http://twitter.com/ocodia