Wasn't the comet mission a smashing success? My concern was that the impact would create few fireworks, but instead we are still seeing the effects several days later.
Events like Deep Impact make professional astronomers look like little kids. We've been sitting around in the office, looking at movies from the spacecraft. Remarks like "Whoa, cool!" and "Dude, did you see that!" arise from the supposedly professional audience. It's what we got into the buisiness for. :)