METROPILOT well, IMHO the fact that it reached quite a lot of downloads and is listed as weekly popular points out that apple is missing something here! For my taste it needs an exclusion list for apps I never want to quit because that is what I need and happens daily: I work with i.e. AfterEffects, a costumer calls me and needs some other movie encoded, so I do that right away and open up "tons" of tools and apps like mail, ftp, encoder, chat and whatever program to do so and surf a lil while encoding. Then when finished I want to quit all the clutter with one single click besides AfterEffects and i.e. DragThing to get back to peacefull work.
There was a app pre leopard wich worked that way with exclusion list but started to behave strange with leo, but I loved it for these special occasions.
(Version 1.0)