The recent city-wide powercut gave me an unscheduled half day off in which to goof around, so I retaped the bars of my Gillott in this harlequin or diamond pattern.
To maximise my use of the bonus spare time, I also wrapped the tape 'Alex Singer style', with the ends of the tape tucked under the brake lever hoods.
As far as I know, cotton bar tape is not readily available here in New Zealand. Mine came from Bicycle Classics.
At the moment the tape looks a bit bright, but with time it will acquire beausage to match the rest of the machine.
The best instructions that I have seen for wrapping tape in this way are at: http://www.fixedgeargallery.com/articles/diamondweave/