I purchased a nokia N90 about a year back, i really loved the camera and the twist to shoot function, i really felt like having a handycam in my hand.
I liked the camera quality and the auto focus option, though the video mode was a bit sluggish, videos really looked like they were shot from a cheap handycam, if viewed from the mobile they were good, but from the point of view of a computer monitor they were not worth watching.
The phone missed the vibrator, really bad in my opinion, specially in my meetings i had some 5 to 10 missed calls due to that, battery was okay could last about 4-6 hours of continous usage.
The twist function now has loosened my phone a bit, am scared to operate it so i have shifted to O2 atom.