Schaffer's film roles include Ling Cho from All Babes Want to Kill Me, Pastor Bob from An New Tomorrow, and the title character of the 2011 film Stan (which he also wrote and produced). His television credentials include Bette, ER, Boston Legal, The West Wing, Gilmore Girls, Reno 911!, The Office, True Blood, Heroes, Partners, Maron, The Neighbors, The Millers, Scandal, and Crowded. Schaffer has also been involved with the production of the short features In Company of Agents, Applejax and YoYo, House Blend, Still Single, Goodnight Burbank, Mixed Blooms, and Smokey Eyes.