Vladimir Vukicevic has just announced a new extension for Firefox called BugWrangler, which adds a toolbar to Firefox to collect locally-stored metadata about the bugs in Bugzilla that you are interested in, and view your bugs sorted by that local metadata.
I’ve heard tons of people asking for “personal keywords” for Bugzilla, and this provides all that without even wasting resources on the server for it, while still integrating with Bugzilla in real time. This sounds like an incredible tool for Bugzilla. I’ll be watching closely!