Months ago found a bash-like script to grep FIXME strings from find command, written by Michael Dominic, I've updated its code to allow other words such as TODO or HACKME. Grab it and send me any comments if you want to. Of course needs love and more details, but works for me. To use it run
./fixme2html.sh /fullpath/to/sources/ /fullpath/output.html
One thing removed from TODO-list.