Yes; the technique is referred to as "toss-bombing". Prior to advanced avionics, though, it was really hard to actually hit anything (depending on what degree of accuracy was needed, of course). PLaying the PC game "Tornado", I made rather extensive use of the technique; what you'd do, is approach your target from the opposite side of a big hill, pull up so you're going up the hill, and the avionics tells you when to release the bomb, so its ballistic arc will get it over the hill and to the target, you drop the bomb, which continues up, over, and down onto the target; you veer off, and so never expose yourself to the target, and (hopefully) its defenses.
First time I'd heard of it being done with WWII era technology, but I have defnitely heard of it being done.
Now that I *look*for it, there's a google video of someone doing it in a flight sim, using... a Hurricane? How apropo!
http://video.google.com/videoplay?do...9333&q=bombing