Problem is, in comparison with the iPhone there's actually not that much worth multitasking. I do find the Conversations multitasking behaviour brilliant, but really due to power suckage (especially with many of the more interesting apps basically in alpha) I'm nursing apps in actual use.

And in real life, although I find the iPhone multitasking frequently annoying, it appears to be a better compromise of power management vs multiple mobile app management - although as Apple is usually inclined, things are a little too Fisher-Price at times.

It's kind of ironic, since the N900's multitasking zoom visuals appear very OS X like.

I'm interested to see how Microsoft will crack this nut - whether they'll just ape Apple or throw something else more true multitasking-like into the mix.