Update: Since this post others have achieved sub-0.1mm layer prints with their MakerBots as low as 0.075mm/layer
Ddurand123 has probably just taken the world record for highest resolution. The current record holder is Rick Pollack at 0.15mm per layer. Ddurant123 was able to print a 10mm test cube at 0.1mm per layer.
Dave! How did you do it?
Did you print slowly or fast?
Did you run the extruder slow or fast?
Did you use a custom nozzle or the standard MakerBot nozzle?
Edit: Dave, sonny abuut misspenning your nmae. My bed.