Spader played character Robert California during the show's penultimate season after series star Steve Carell left the show to focus on his film career.
"I didn't see it," Spader told TMZ at Comic-Con in San Diego Thursday when asked if he was happy about how the beloved sitcom wrapped up its ninth season.
He didn't say why he missed the finale.
Spader starred in numerous classic 1980s young adult movies such as "Pretty in Pink," "Mannequin" and "Less than Zero," before he transitioned to television, winning three Emmy Awards for his portrayal of Alan Shore in two different series -- "The Practice" in 2004 and in "Boston Legal" in 2005 and 2007.
Notable deaths of 2014 [PHOTOS]