SilverWook said:

When has bad child acting ever made George cut a scene? ;)

I believe the scene humanizes SEN a bit more than George may have wanted. Without it, SEN is more of a selfish person who wants THX for his new roommate, (his old roomate's death might even be a tad suspicious) and has the computer skills to get what he wants.

Either version suggests this society pretty much raises kids via machines, and adults don't interact with them much.

I was under the assumption that SEN was trying to press THX into bunking up partially using the fact that his roommate died due to THX's negligence/error. I figured he was that pile of waste being carted out of the disaster area on the monitor.

I have yet to actually watch the bluray version of the long SEN/THX conversation about roommates. It looks to be quite different.