Geoffrey Arend is an American actor. His first work was as a voice actor for the animated series Daria. In the early 2000s, he appeared in the films Bubble Boy, It Runs in the Family and Garden State. He next had notable roles in the movies The Ringer, National Lampoon’s Pledge This!, and (500) Days of Summer. Meanwhile, he landed his first starring role on television, playing Hector Culligan in the short-lived series Trust Me. In the 2010s, he played Ethan Gross in Body of Proof. After the show was canceled, he was cast as Matt Mahoney in the TV series Madam Secretary, a role he still currently plays. He also appeared in the films Save the Date and Worst Friends.