"Wot, like at Giza and Thornborough? ;)"
Yup! But it's a pity it's only three. The problem is that if you were to show me ANY three points I'm pretty sure I could find three stars in the sky that had the same relative alignment. The only reason that an Orion alignments is any more significant than random chance is that Orion is known to be special within ancient cultures for other reasons than alignments. The Egyptians for instance considered Orion to be Osiris.
Steve