A week ago, I was concerned that this interview might be tinged in sadness. Was it possible that NBC’s rollickin’ good fun spy rom-com “Chuck” might not be back for a fourth season next fall? But then the clouds parted and the sun shone… and NBC renewed “Chuck,” too. There are a couple must-see TV shows for which our entire family enjoys gathering around in front of the television these days. There’s “Lost” and “Modern Family” on ABC and “Big Bang Theory” on CBS, and “30 Rock” and “The Office” on NBC. But the one my son and I especially enjoy above all others is “Chuck.”   One of the perks of hosting this show is getting the opportunity to interview men and women whose work I enjoy. And I’m delighted to welcome back for a second show the man who puts the “ster” in the “Chuck” house band “Jeffster,” the actor who brings “Buy More” sales associate “Lester Patel” to life, Vik Sahay. VIK SAHAY podcast excerpt: "NBC has a history of sticking with (quality) shows. That's the lore of 'Seinfeld,' isn't it? They believed in it and believed in it and by season four, they struck fire."