Ddurand123 has probably just taken earned 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.