Transformers: the Movie 
It's like a male chick flick, what with the death of Optimus Prime and his passing of the Autobot Matrix of Leadership to Ultra Magnus

. Then there's the whole coming of age story angle with that slacker Hot Rod (aka Rodimus Prime) becoming their new leader when nobody expects him to ever amount to anything

...
It's also funny when the Decepticons are fighting amongst themselves on that shuttle to determine who
their new leader will be.
Leonard Nimoy and Orson Welles contribute their vocal talents in this one.
GI Joe: the Movie 
Two words: Sergeant Slaughter. What's not to love?
Don Johnson, Burgess Meredith, and the immortal Sergeant Slaughter participate.
Anne of Green Gables and
Anne of Avonlea 
Watched these in English class when I was in junior high. Both are sappy, but I like 'em anyway for some odd reason.
I loved the 80's. They don't make cartoons like that (Transformers or GI Joe) anymore.