Definitely Episode IV -
not just because i was 7 when it was first released, but
because it still holds up to the others. When it was
re-released at the theaters a few years ago, i watched it
again and realised just how good of a movie it really is.
The only audience it caters to are the movie fans.
in reply to Favorite Star Wars film:
Second for me would be
Episode V, with
Episode II trailing
very closely behind - Yoda**2 !!! (and i've always been
a Boba Fett fan!)
"These are not the droids you are looking for."