Boeing XB-15 (via Bomberguy)
Forgotten Aircraft - The Douglas XB-19 (via Bomberguy)
A little off-topic aviation history for Friday afternoon.
Two of the coolest aircraft built in the 1930s were the Boeing XB-15 and Douglas XB-19 bombers, two huge monsters which were the spiritual predecessors of the B-29 and B-36. Poking around Youtube, I found a couple of nice videos regarding these two aircraft. The one about the XB-19 is particularly interesting and incorporates some newsreel footage.