They recently reviewed an M-48A3 Patton Tank from Flames of War, in 15mm scale.
A nice mini for those of you wanting to do Giant Monster/Kaiju battles, B-movie alien invasions, or Silver Age superhero campaigns.
Well, historical battles, too, I guess, if you're into that sort of thing...;)
QRF Miniatures also does a great line of Postwar Armor. Here's a link to the US Armor section.