I've (obviously) seen all the movies. I've also got Troops, both Ewok movies and some other things on DVD (Star Wars to Jedi, Star Wars to Star Wars, Nova: The Magic of Special Effects, George Lucas in Love, etc.).
I've read 27 of the novels (all are pre-NJO). I own a bunch as well. Bless the creators of Half-Price Books.
I own a bunch of the "Essential Guides."
I love Curtis Saxton's Star Wars Technical Commentaries.