Greasemonkey Script: Twitter Sidebar Retweets
Twitter Sidebar Retweets places retweets for a user on the sidebar of their twitter page. So if you are visiting TechCrunch's twitter page, any retweets for @TechCrunch will be placed in the sidebar below friends. Will also list retweets for you if you are on your home page.
Greasemonkey is required
Thanks to Ian Kennedy for suggesting the idea of this greasemonkey script. Also, thanks to SourNote, who wrote Twitter Sidebar Replies script, it made my job lot easier.