Many U.S. filmgoers will associate Keir O'Donnell with his performance as Todd Cleary, the not-so-subtle homosexual artist who tries to seduce a terrified Jeremy Grey (Vince Vaughn), in David Dobkin's comedy smash-hit Wedding Crashers (2005). Actually, this slightly diminutive comedic actor (who hails from Australia) traces his film career back to the early 2000s, though Crashers marked his first major Hollywood appearance. Vaughn had O'Donnell turn up to reprise that characterization (with a running gag related to the movie) in his late 2005 touring stage performance; it later evolved into the ensemble performance film Vince Vaughn's Wild West Comedy Show. O'Donnell then landed supporting roles in such films as the crime thriller Pathology (2008), the romantic comedy Flakes (2007), and the slasher movie Amusement (2008). He was in the hit 2009 Kevin James film Paul Blart: Mall Cop, and then took smaller roles in When in Rome and The Runaways.