Real-time X 9, MSPaintbrush drawing demo video (25 MB .mp4). The screenshot below, of the 900 x 676 vid, is scrunched here to fit a 650 pixel window. The mp4 at the above link is the highest "save-as" quality (there's still a bit of compression/softening but it's pretty sharp).
Actual size detail:
A YouTube version of this was put up by Guthrie in Jan 2007 (thx again) - through no fault of his, the image quality at 640 x 480 is pretty mushy. This may be a blessing to some. After almost 8 years this is now up to 4640 views, 12 upvotes, 2 downvotes, and 4 puzzled comments.
The drawing was based on a painting from 1989, 64 x 54 inches, acrylic and oil on canvas. The atom went missing in the '00s version.