I have a collection, though most of the ones bought when I was a kid are either the classics that everyone has (Super Metroid) or not worth anything. seems most of the games worth something now were rented at the time, not bought. Zombies Ate My Neighbors really surprised me, though; that's one I have.
A mint copy of Panzer Dragoon Saga.
ooooooh don't let my fiance know you have that. he's been seeking a copy for years.
speaking of which...you guys know those crappy paper bookmarks that typically came with a tassel? in my experience, they fell to pieces fairly quickly (then again, I was a bookworm and spent many summers on a hammock with a book). anyway, my fiance has one of those bookmarks...with Link from the 2nd Zelda game on it. I think these were made in '89. I'd be surprised if there's many more around due to their fragility...maybe worth something, maybe worth the paper it's printed on -shrug- probably worth a pretty penny to the right person, though.