AMC has canceled its unenthralling conspiracy-thriller series Rubicon. Cause of death: Nielsen atrophy. The show's 1.6 million viewers might have been enough to carry it on a basic-cable network, but its audience in the key 18-to-49 age demo was less than 450,000.
On the other side of the scale -- waaaaaay on the other side of the scale -- Fox has just renewed The Simpsons for a 23rd season. That will make it 515 episodes, in case you've lost count.