You can't expect that an entry level SLR (or even a mid-range one) will have the same breadth of features or quality that a pro body will have.
Canon seems to have done things right with their 5Dmk2 http://vimeo.com/3155182
but the D90? Limitations here, drawbacks there...blah. Lots of terrible/boring videos (in HD!!!) on vimeo. Of course, considering the economy I'm sure Nikon and Canon are just throwing whatever tech they currently have into their new bodies hoping that a gimmicky (read: not very usable) video mode will steal a few sales from the other guy. In any other climate I think we would have seen Nikon and Canon both tweak with things in their pro bodies before releasing water-down versions to the entry/mid range models.