I hope there is a nice transition between the two, at the moment the Dock just switches from bottom to left or right. A simple fade our then in would be cool. Utilising Core Animation to have the icons fly from the bottom to their new position on the side would be even better
Anyone think Apple are going to slip in loads of ON/OFF iPhone style sliders into the OS so that it works well with a full sized Multitouch display they're planning for...?
Radio boxes are clearly more effective in a mouse driven interface as you don't have to click, hold, and drag in the right direction. All points to multi-touch baby!!!!!
The On / Off switch is probably there because:
A) It better maps to real life, we have lots of On / Off switches in real life, I have never seen a radio button in real life.
B) It looks cool. <-- This is particularly important!
I wouldn't read more into it than that. Having said that multi-touch in some form is almost inevitable on Macs at some stage.
Back to the thread, people who mention quicksilver forget two things:
A) You can't see what's running at a glance.
B) New users might not remember the name of the app. They just know to click on the big blue compass for the internet and the postage stamp for email (Like my Mum and Dad).
It's the whole Recall Vs Recognition debate. Recognition generally wins hands down, it is far faster.
Quicksilver is a power users tool, and a darned fine one at that, but it is not the end-all solution for everyone. The Dock is perfectly adequate for many users.
Having Quicksilver as default would be a disaster, CMD/CTRL - SPACE would be the new CTRL - ALT - DELETE. You need to do a two fingered key combination just to launch an app! the critics would exclaim. And they would be right.