Posted: Thu Jul 18, 2013 8:41 pm
Jared and I committed a horrible blasphemy by introducing a mutual friend with Gigan AND Megalon (the latter on the big screen in 35mm!).
Gigan is the best work of fiction ever wrought by the hands of man, but outside that I'd start with the original (of course), even making allowances for KotM since it's so accessible. In fact, I'd almost recommend KotM first until your friend has an appreciation for the history and culture that led up to the original movie.
Other then that, pick the Honda essentials from the '60s (Mothra vs. Godzilla, Ghidrah, and MZ), some Fukuda funsies (Sea Monster and MechaGodzilla) and some good modern Godzy movies (G2000 and GMK). Final Wars if they like dumb crap.
I think those are the essentials!