I’ve added some new features to the third webisode of Sofa Snark, my weekly vlog series wrapping up the week’s prime-time television shows. There are now a select few television clips scattered throughout the show. As always, every weekend I take on some of my favorite shows, mostly because my DVR is overflowing, and so are my opinions. Besides a rant on the SAG contract negotiations, this week’s Sofa Snark theme is sex, from “Saving Grace” to “Ugly Betty.” Other shows hit on this week include “United States of Tara,” “Big Love,” “Gossip Girl,” “Lost,” “Law and Order: SVU” and “30 Rock.” Plus, watch out for a mention of the New York Times theatre critic Charles Isherwood. And keep the feedback coming.