I remember seeing a review a few months ago where they compared one of the 6MP digilars to scanned MF. The upshot was they thought it was higher res, until they looked closely and found that the corrugated metal building was just the right size in the frame to set up a 'beat', and create a sharp (but non-physical) corrugation pattern.

I like the randomness of film, even the grain (though I do go to some lengths to minimize it). Thankfully, most digis are only interpolating between pixels, and not inserting new scenic elements, changing the colors, or correcting the composition.