Seth Rogen and More
Rainn Wilson just posted a photo of the original sign-in sheet for day one of casting on The Office pilot (conducted November 6, 2003), which reveals some of the other actors who auditioned for the roles that went to Steve Carell, John Krasinski and Jenna Fischer.
The biggest standouts are Parks and Recreation star Adam Scott (auditioning for Jim), Suburgatory star Alan Tudyk (auditioning for Michael) and Mary-Lynn Rajskub (auditioning for Pam).
"I was the very first person to audition for the series," Rainn wrote. "Notice all the amazing talent on the sheet, including the amazing #13! This is perhaps the greatest Office keepsake I have. So grateful for the best job I will ever have."