It's kinda hard to find these days (gotta love Viacom's legal team!), but Stephen Colbert did a hilarious segment [0] on the Colbert Report about the history of AT&T/Cingular back in 2007. Terminator 2 indeed!
All that renaming and buying out of companies was basically Ma Bell reforming herself like the liquid metal Terminator from Terminator 2. Hence the comment about Judge Greene rolling over in his grave.