Did you know you can mark bugzilla comments, making them appear to be highlighted? timeless recently pointed this out on irc, and I figured a lot of people didn’t know about this really neat feature. All you have to do is add &mark={comments} to the query string of the url, and can you can highlight away! The comments can be specified in a comma separated list, and/or you can specify ranges.
I’ve marked up my first fixed bug as an example.