I just released bbPress Favicon the companion plugin to WordPress/MU Favicon. It does exactly the same thing WordPress/MU Favicon does except does it for the bbPress sitewide and the bbPress admin pages. You can see the Changelog for those that are interested!
—————————- Changelog: —————————-
1.0
- First Release
- Working with 1.x
Comment Meta:
Pages 
Categories 
Tag Cloud 
Entries RSS 
Seven 
City 
Characters 
Landscape 
Nature 
Shapes 