This Maemo powered Nokia N900 is excellent. The web browser is superb, a proper web browser that does flash, so you can watch youtube. The browser works well on the screen with gestures to zoom in, like double tap. The camera is cool, 5 megapixels and it geotags the location you took your photo using the builtin GPS. Video is good quality too, I've since download Qik and can send videos live to the web. Mediaplayer is good, very good quality watching films, the builtin in speakers are loud and it has TV out to watch on a larger screen. Neat thing is that it has a built in FM transmitter, so listening to music in the car is easy using FM, the N900 even makes your car radio say Nokia on the radio!
It is has an application manager to download more apps, with Ovi shop to follow soon. All applications can be run at the same time, with proper multitasking. Plus as it is a computer, it comes with the x-terminal, so you can do geeky stuff. And of course it is a phone so not only can your get connected over WiFi, you can use 3g and make phone calls. The contact manager groups contacts for phone calls, Skype calls, SMS, instant messages, with a conversations application to view all conversations by contact, making it easy to track conversations, or start new ones.
In all in all, I highly recommend this smart phone.