I work in the TV/film production industry, and one of my jobs was to install Avid suites. About 3 years ago i heard that Apple had poached the designer of the Avid Adrenaline.
Now im not a 100% lover of Avid, its based on code that was written for the old AVB systems and it doesn't matter what PC system you put it on its slow and can only do one thing at once (you can export a QT but you can't carry on with anything else, no render farm option), so FCP is a good system (although has weird differences in editing compared to Avid). FCP could be a brilliant system if A) they stop all the multi formatted in/outputs it does (its a nice idea, but having the option to have your project, sequence and output settings all at a different rate is mental!) and B) they don't go the imovie route and really mess it up.