After a long day shooting something commercial like a line with 20 or so products I have a little over 200 frames that I keep. I delete most of the shots on the spot when testing my lighting and exposure so I probably shoot 400 frames. Of that I have at least 80% that are commercially viable for the client to pick from.
When I'm shooting my girlfreind and she's having a good time I have to call it off after about 400 frames. That would be about 4 hours not including breaks. When I'm shooting her... or people in general, I don't have as much brain capacity to think about my variables because I'm directing and cheerleading... 4 hours of that and I'm wasted. Of that, I have maybe 25% that are worth doing post on.
I would hate to try to archive, cull and cleanup 1000 frames. That would make me crazy. I like shooting a camera a lot more than operating a computer. Besides, with a D1X the buffer jams at 6 frames (RAW)... so I never shoot continuous. Canons can blast through 20 frames in 4 seconds (JPEG), so I can see how you could easily bang off a K of JPEGs.