He based the screenplay on a 70 - page scriptment done by John Hughes .
Rogen additionally co-wrote Drillbit Taylor , also produced by Apatow and starring Owen Wilson as the homeless titular character .
Rogen based the screenplay on a 70 - page scriptment done by John Hughes .
Rogen additionally co-wrote Drillbit Taylor , also produced by Apatow and starring Owen Wilson as the homeless titular character .