A Look Inside Anthony Mangieri's Wood-Burning Pizza Oven -- New York Magazine
Wow, this is great, check out the link above or the thumbnail image for a detailed pic with some explanations of the highlighted areas. It's a handcrafted Italian oven at a New York City (East Village) pizza shop, Una Pizza Napoletana. Maybe I can get there on my pizza tour next Friday.
I'm going to try throwing some wood shavings on my fire before putting a pizza in, as Mangieri does, to see if that adds a smokier flavor.