The guys over at Fusion-Reactor have been busy it seems. During CFUNITED, Michael presented on FusionDebug. I missed this - but caught the demo on their site and it looks really slick. It is for CFEclipse users and allows for some very impressive debugging capabilities. It isn't released yet, but I'd recommend checking out the demo movie.
Also - if you are in NYC, Michael Dinowitz will be presentingon FusionDebug at the local user group.