Answer: jackblack

AnswerCrossword Clue
JACKBLACK

Voice of the title character in "Kung Fu Panda"

JACKBLACK

"School of Rock" star

JACKBLACK

Actor in Tenacious D

JACKBLACK
"King Kong" co-star, 2005
JACKBLACK
Star of 2010's "Gulliver's Travels"
JACKBLACKHalf of Tenacious D