Thanks to Ray for pointing to this: DSLR camera simulator.
It simulates the effects of various settings of an advanced cameras. Some of the results you only see after pressing the shutter button.
This one for instance was "taken" at 1/10 second, and got shaken.
(I should say that shake-safe shutter speeds vary a lot with the person, the lens, any built-in stabilizor mechanism, and not the least luck (take several pictures if you're in doubt and it's an important picture).