You couldn’t fill a half-hour sitcom with every moment of screen time From 2009: Scott Krinsky’s character “Jeff Barnes” has earned in nearly two seasons of NBC’s “Chuck.” But you know what? That’s okay. Because every time Jeff is in the camera frame—almost always with his partner Lester, played by Vik Sahay—you have to watch him. And listen. And frankly, you probably have to listen again. Because what comes out of his mouth is always a head scratcher.