We love using SourceTree to manage our repositories on Bitbucket.
SourceTree helps you grok the status of your repositories at a glance. Quickly see what files are changed, commits that are waiting to be pushed or pulled, and what merges are outstanding. You can also search the history of your repository by commit message, author, or date range. Pretty powerful stuff.
SourceTree recently released version 1.2, with improved Bitbucket integration. As part of the new release, the kind folks at SourceTree have graciously offered a 10% discount code for Bitbucket users until June 20, 2011. Enter the coupon code BITBUCKET01 during checkout and you’ll be set!