US TV
The Emancipation Of Ernesto will see Valderrama cast as an innocent and confused son seeking his father and a former girlfriend amid the excess and confusion of Los Angeles.
Susan Levison, Fox's senior vice president of comedy development, said: "The writing jumped off the page, it has a really unique original tone. It was a mix of real emotion with hard comedy. [Writer Emily Kapnek] has crafted a character we have never seen before."
Valderrama has appeared in movies including Fast Food Nation since That 70s Show ended in 2006.
More: US TV
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2012-13 Season
Blythe Danner for ABC's 'Gilded Lilys'Madeline Zima is also cast in the period drama pilot produced by Shonda Rhimes.
US TV Interviews
'The Bachelor' Blakeley Shea - interviewModel was sent home following a two-on-one date with Ben and Rachel.
US TV Ratings
'Blue Bloods', 'Grimm' rise on FridayCBS beats ABC to win Friday night's ratings battle, thanks to Blue Bloods.
