ITC Blair Light

Right Bob, close to Blair but that's not it. Some differences: /E with equal width bars, circular /O, /S leaning towards. Engravers Gothic has a better /O but the rest looks off as well... Don't know what it is for the moment.

I knew I've already seen this one... About 'Gladiator' this time, another Ridley Scott's movie: http://www.typophile.com/node/117569

Can't find a match for the complete lettering. You're right, that could be a mash-up. /C, /O and /G look very "Avant-Garde Gothic and the rest close to Aviano Sans, Idlewid or Syncopate. Still searching...

Adding Luxury Gold, Halogen and Capline to the list. 'DECEMBER' BTW is Aviano Sans.

Good Additions Ryuk, I only floated Blair because it has been around for a number of years.