After two weeks of use, I do agree that this is a computer that has a lot of features, one amongst them being a phone. The phone is not any more important than any other part of the device. It's just another application like the rest.
All other devices started as a phone, and then it has everything else added. None of the addons for these "phones with addons" are great.
The difference is that the N900 does most applications better than other phones, and it's phone application is quite good, but not great, which is what you find from the "phones with addons".
What blows people's minds, is that this is the first device to NOT put the phone on the almighty pedestal, but make it equal to the other applications on the device. The iphone sort of did this, but it's still a phone first.