My experience with the D90 showed that exposure compensation did not offer a satisfactory solution. I other words, the image was just getting darker without the tonality balance being adjusted to compensate for the blown highlights.
I certainly found a marked difference in that regard between the D300 - which I still had at the time - and the D90. All that talk about the D90 being the 'same' as the D300 is not entirely true. There are many similarities in 80% of situations (read: normal situations) in the way pictures look, but hit a more difficult situation (read: high contrasts) and the D300 is much superior in my view. As a matter of fact, I don't remember ever having blown highlights issues with the D300, unless I was really trying for the sake of testing. To me, the blown highlights issue - and way too often - was probably the main issue for not keeping the D90. I would be curious to hear from other D90 owners on this issue, and whether they are experiencing the same problems. Or maybe I had been spoiled by the D300?...
With the video, it was quite strange how much I initially wanted it, and how much I didn't care for it once I tried it. Once I played with it for a while I wished that the money that pays for the video in the D90 would have been better spent in having a better feature in the camera that is only related to taking photos. I don't know, faster fps or weather sealing, something along those lines...Especially after seeing how unpractical it is not to have auto-focus in video mode, I thought that I much prefer the videos taken by my p&s Lumix TZ15. Those Nikon promo shots featuring the video, with bokeh and all, look great in the ads. In real life, that's another story...But I'm no expert in taking videos, so maybe someone with some skills might find it useful.
To me the D90 should ideally have been just a D80 with the 3" VGA screen, new menu system a-la D90 and faster than D80 fps. That's it. That would have been perfect.