Nathan Lane and Matthew Broderick in The Odd Couple
Mantello started his New York stage career directing Imagining Brad at the Players Theatre in 1990. He won the 2003 Best Director of a Play Tony Award for Take Me Out. He also won the 2004 Best Director of a Musical Tony for Assassins.
Acting credits include Broadway's Angels In America and The Normal Heart, which both earned him Tony nominations
Broadway directing credits include What's Wrong With This Picture?; Love! Valour! Compassion!; Proposals; Design for Living; An Evening with Mario Cantone; Frankie and Johnny in the Clair de Lune; Wicked; Laugh Whore; Glengarry Glen Ross; The Odd Couple; Three Days of Rain; The Ritz; November; Pal Joey; 9 To 5; Other Desert Cities; The Other Place; I'll Eat You Last: A Chat With Sue Mengers; Casa Valentina; The Last Ship; Airline Highway and An Act of God.