I can watch them back to back anytime I choose, through the magic of dvd ownership. Mostly I don't bother with the "first" 3 eps.
BTW, did you watch The History Channel's "Star Wars--The Legacy Revealed"? Rather a grandiose title for a mish mash of stuff. More informative if you've never read any Joseph Campbell, but interesting nonetheless:
http://www.history.com/minisites/starwarslegacy/