Seriously, I'd almost forgotten. Among many, many, many other things, this guy caught:
"rouge" for "rogue"
"Five-Eights" for "Five-Eighths"
"Philip" and (get this) "Philipe" for "Philippe"
This is off a hard copy--he's not spell-checking anything. It's just an amazing level of detail-orientation. No offense to the people who think I'm a good proofreader, but I am just nowhere near this league.