I am surprised that nobody has mentioned the fact that you only have to boot an application once in a blue moon! I can't even remember the last time that I shut down my PB... it sleeps alot but VERY rarely (OS upgrades) do I have to shut it down completely. So all my applications are open all the time... I could list off the 10 or so that NEVER close... but I am sure by now you have seen that us mac users, powered with expose and a unix based OS have arguably the best multitasking machines there are. I will say this though... it takes some time coming from a World of Windows to to understand what multitasking truely is... not just 20 progs running at the same time... but being able to fluidly move between them to get a job done faster... I have tried this on a windows machine... it does not even come close