CNBC contributor Jeff Macke has left the network, TV Newser reports. Here's why.

CNBC's Jeff Macke went progressively nuts on the air yesterday, beginning with a bizarre afternoon phone interview during which he rambled about Justin Timberlake and culminating with a 7 p.m. breakdown on CNBC Reports wherein he incoherently berated anchor Dennis Kneale. This isn't CNBC crazy—it's actually crazy.