The A-20 with torpedo also looks nifty, mostly used by Soviets. The single torpedo was suspended under right wing, the rack being in the same time attached to the fuselage side so the torp would stay in it's place even during maneuvers (picture, more pictures - click on the thumbnails). The 'side' rack was rated up to 1000 kg (~2200 lb) bomb. Leaves the bomb bay for plenty of fuel.