Spotlight on MySQL
One of my "part time" roles is a sysop on the Quest MySQL Pipelines, as I have mentioned on here before we don't get many posts unfortunately and I can only assume that's because MySQL have such great forums of their own.
Anyway, Quest produce a product called Spotlight on MySQL which is a rather cool looking monitoring tool for MySQL. Personally I haven't had the chance to use it but the development team are currently looking for feedback on Spotlight on MySQL, with particular interest in if there is need for replication support.
So if you have anything to add pop over to the forum and let the guys know in the Spotlight on MySQL section.