The first play is the one New England had so much success with this year. Outside receiver runs a quick slant (and the player defending him follows) and blocks on the player covering the inside receiver. This leaves the inside receiver space as he catches the ball.
Since the catch is behind the Line of Scrimmage, there is no pass interference against the outside receiver for blocking while the ball is in the air. (Someone check me on this.)
Since the catch is behind the Line of Scrimmage, there is no pass interference against the outside receiver for blocking while the ball is in the air. (Someone check me on this.)