Suggestions by @nancyperry

Larry Lamb

as Dumbledore in Harry Potter

Score: +1

Rob Brydon

as Professor shape in Harry Potter

Score: +1

Leonardo DiCaprio

as Draco malfoy in Harry Potter

Score: +1

Jennifer Aniston

as Hermione in Harry Potter

Score: +1

Ed Sheeran

as Ron weasley in Harry Potter

Score: +1

Ryan Slade

as Harry Potter in Harry Potter

Score: +1

Mark Salling

as Kenickie in Grease

Score: +1

Chord Overstreet

as Tom chisum in Grease

Score: +1

Ricky Martin

as Teen in Grease

Score: +1

Rupert Grint

as Principal in Grease

Score: +1

Daniel Radcliffe

as Vince in Grease

Score: +1

Lionel Richie

as Leo in Grease

Score: +1

James Corden

as Coach in Grease

Score: +1

Jennifer Grey

as Cha-cha in Grease

Score: +1

Robert Pattinson

as Roger in Grease

Score: +1

Darren Criss

as Dooby in Grease

Score: +1

Peter Benson

as Dooby in Grease

Score: +1

Alex Newell

as Jan in Grease

Score: +1

Emma Watson

as Frenchy in Grease

Score: +1

Dianna Agron

as Patty simcox in Grease

Score: +1