Zachar booked his first starring role in Greek after living in Los Angeles for only two months. He played the part of Ernest in the film Little Big Top and then appeared as a cashier in the movie Bodega, also in 2006. He has also done commercials for Carl's Jr. and Dunkin' Donuts. He has performed in various theater roles such as On Golden Pond, Prairie Lights, Big: The Musical, Les Misérables and Guys and Dolls.