I caught a talk on Sacred Geommetry at Megalithomania a couple of years back... now that really IS crackers! :D
Even compared to ley lines (John Michell also did a talk at the same conference and was hugely enjoyable, as did Peter Knight, who I had the good fortune to have a bit of a chinwag with) it's one step beyond credulity for my liking! IMHO, of course! ;)