I am pretty sure most of us rookies know that re-watchabilty,as you put it, is not the end all criteria for rating a movie. Its just one thing to consider.
For example. I think Saving Private Ryan is Spielberg's best but I would rather watch Jaws or RotLA 19 out of 20 times.
I like the link though.
I never get tired of SPR or Jaws, but ROTLA is a once in a great while movie for me.