Unfortunately, I am too young to have seen even RotJ in theatres.
Coincidentally, my first Star Wars film was RotJ anyway. It was a DVD-Bootleg of the '97 SE LD, before the official '04 release (strangely, no one remembers buying it, and I didn't know what it was until after joining OT.com). I saw this one over and over again.
For TPM, it was the original P&S VHS. I remember being bored by it... still am.
As for Empire and SW, I saw the '04/'97 versions at least twice on television or at a friend's house. Actually, maybe I saw the GOUT of SW, because I don't remember the Jabba scene until much later in life.
For AotC, I only saw it at a friend's house over a decade ago. Haven't seen it since.
I saw RotS at theatres... needless to say, everyone thought the ending was awesome (NOOO notwithstanding). I later saw it on DVD.
Then, many years later, I first saw the theatrical versions of the SW trilogy from the DeEds (missed the GOUT release), and absolutely fell in love with Star Wars again. So, thanks for that, guys.