IT'S about time we had a near-permanent car thread here! (sorry for being late, I havent been here in about 6 months)
as for the new Hemi, it's actually a Poly-sphereical head, but the word "Poly" wouldn't sell as many cars as the Hemi would, hence the new motor is dubbed the "Hemi". In a few years we'll see Dodge make a real Hemi again.
as far as the new Charger goes, most-if-not all of the guys over at the Dodge Charger forums think it's crap with a Hemi stuffed in it. It's a Magnum Sedan, or a Not-a-charger. That's our stance on it