One of the features that has been lacking in bbPress is a way to censor out the bad words that people will inevitably put into your forum. Many other forum packages have this feature, but bbPress, as usual, is spartan when you do a default installation.
Terry Smith, in conjunction with b5media, has expanded upon the Censor plugin by Michael Nolan so much so that he thought it was a good idea to release and maintain his own plugin for censoring not only forum posts, but also tags, titles and more. It includes an English *bad word* list by default, making it even easier to stop various bad words from appearing on your forum.
The plugin is called C*nsor, and is currently considered a 0.1 release, though I think it is almost ready for a 1.0 release. A very cool bbPress plugin, and one that I can see becoming a standard install on all bbPress powered forums.