It is worth remembering that "only" some 500 or so of the 2000 total were atmospheric tests so in the vast majority the radioactivity was contained underground.
It also rather scarily illustrates that even large numbers of these things doesn't wipe out life on earth, or anywhere near it (from the radiological point of view)
For me the most fascinating and in a way eerily beautiful images are those taken with the Rapatronic cameras microseconds after detonation, some displaying the weird "rope tricks" effect from the cable-stays that supported the shot-cab and tower vapourising in the flash. The physics of what is going on there is simply amazing.
There are some amazing pics of the fireball emerging through the side of HMS Plym in the "Hurricane" test at Monte Bello (Aus) but I've only seen them in a book - can't trace them on the web. Maybe someone else can.