Bug Links will filter commonly used references to bug numbers into active links to those bugs. It supports numerous Free Software projects, and adding support for more, despite being a code change at the moment, is very straightforward.
It will filter bug references such as:
With or without space before the #.
If you would like your project supported in Bug Links, please send me the base bug URL for your tracker and a 16×16 icon (PNG preferred) to represent it.