Well... of my favorite 80s movies:
They're already remaking Conan... terribly cast lead actor
I'd love to see Bloodsport redone, but new action stars are horrid, so that won't work.
That leaves:
Coming to America
Now starring Lil Jon
The Princess Bride
Now starring: Chris Evans, Isla Fischer, the new wrestling Giant guy, Mike Myers as the "Inconceivable!" guy, and Benicio Del Toro as Enigo Montoya
And Ferris Buellers Day Off:
Now starring: Well **** I dunno. How about Troy from Community? and Seth Rogan as Cameron