Zachary Quinto (b. 1977) is an actor from Pittsburgh, Pennsylvania. His most notable roles include playing Sylar on NBC's Heroes, and Spock in 2009's Star Trek reboot.
Quinto appears in a Word of the Day segment for Sesame Street's 45th season, demonstrating the word "flexible" with Grover.
Quinto with Eric Jacobson performing Grover. (also pictured: Tyler Bunch)