In java-mode (and other cc-modes), I have the following code 

                   (font-lock-add-keywords
                    nil
                    '(("\\(FIXME\\|TODO\\)" 1 font-lock-warning-face)))

However, this doesn't work on FIXME or TODO words in comments, making it much less useful.  Is there a way for these keywords to be highlighted in font-lock-warning-face, even in comments?

Thanks,
Nathaniel Flath