HE-MAN:CHRIS HEMSWORTH
Chris was originally one of the front runners for the He-Man remake before it got canceled and he was cast as THOR. I think he could still play the part and keep THOR and HE-MAN has seperate characters.
PRINCE ADAM:JAKE ABEL
Jake is my choice for Prince Adam he looks like Chris but different enough that he would own the part of Adam well.
MAN-AT-ARMS:TED LEVINE
Ted looks like Man-At-Arms and would be a good authority figure that the character needs to have for Prince Adam.
THE SORCERESS: LENA HEADEY
Lena is an actress that could make you believe she has magical powers her character in 300 reminds me of the Sorceress.
TEELA:LAURA VANDERVOORT
Teela is of course the daughter of man-at-arms and the sorceress. This role could be the big screen breakout role that she needs.
KING RANDOR:JEFFREY DEAN MORGAN
Jeffrey would be an amazing King Randor
QUEEN MARELNA:JANEY SEYMOUR
Jane would bring a motherly role to adam and be a dynamic queen along side Randor.
QWILDOR:WARWICK DAVIS
This role was made for Davis.
SKELETOR:JASON ISAACS
Jason always plays the villain well and I think skeletor would be the ultimate villain for him to play.
EVIL-LYN:HELENA BONHAM CARTER
This casting choice is a no brainer.