[kevkrom]

the technical zone of the boundary for all boundary lines on the field (goal line and sidlelines) are defined as the interior edge. So one micron of the ball over the white paint of the goalline is a TD, and one micron of a shoe on (remeber you're not out of bounds until you touch) the white paint of the sideline is out of bounds.

And, not to confuse you further, but the end line at the back of the end zone is treated like a sideline, i.e., any part of it is considered out of bounds.

[usmcobra]

I'm not confused here, the endzone is inside the lines ergo you must cross the line completely to enter into it.

That's breaking the imaginary plane formed by the goal line.

By the examples given by some here if a center moves the ball foreward at the goal line he scores a touchdown.

We all know that is not so.