Masters Of The Universe (1987)

Genre: Action | Adventure | Fantasy | Sci-Fi | Thriller
Tagline: A Battle Fought In The Stars. Now... Comes To Earth.
starring: Dolph Lundgren as He-Man and Frank Langella as Skeletor. Other actors include Jon Cypher as Man-At-Arms, Chelsea Field as Teela and Billy Barty as Gwildor, the short Thenorian inventor/locksmith

Plot: A life-action feature film based on the popular cartoon kids show about a prince turned warrior named He-Man.

http://www.imdb.com/title/tt0093507/
http://en.wikipedia.org/wiki/Masters_of_the_Universe_(film)