Valley of the Gwangi – Harryhausen’s effects stand up, and I was able to enjoy the story even though it was pretty standard fare.
The one and only time I watched that movie, I kinda hated it. Loved the effects, but both the humans and the titular Gwangi were such hateful creatures I couldn’t enjoy it.
Heavy Metal – Lots of naked animated ladies.
Sometimes I think Heavy Metal would’ve been better if it had been nothing but naked animated ladies and dropped all pretense of having a plot.
The stories from the magazine the movie is based do have plots, and naked ladies. It’s travesty we’ve never had a proper sequel, or at least a full blown Den movie. Heavy Metal 2000 doesn’t count. 😉