I just watched Channel 5 news and Larry McCarren explained zone blocking. He showed film of a play the Falcons ran against the Packers, a sweep to the right, to illustrate his point. The basic idea is that linemen work in pairs, following the same track. This allows one of the linemen to be very aggressive because he has a teammate backing him up and either double-teaming or cleaning up whichever defender is left unblocked. The way it worked on this play was that the right tackle blocked the defensive end across from him, sealing off the outside, while the tight end went out and blocked Na'ill Diggs. On the inside, the right guard blocked Grady Jackson, and because Grady tried getting to the outside, the center came up and blocked Nick Barnett. On the other side of the line, the left tackle went after the other DT or DE (I forget which), freeing the left guard to go after linebacker Robert Thomas, who was trailing the play. It really didn't look any different to me from normal line play. If Larry hadn't explained what was going on I would not have noticed anything different. But hey, Atlanta and Denver were the top two rushing teams in the league this year, so I'm all for it.