The second one is from CNN.com - what's up with the orange "N"?
Now you are entering Photoshop country.
The third one is from the Olympics and probably a PS job - the delete button is on a different location, but the red card format sign is still on the same spot (click on image for full size):
Two more after the break:
The next one is also from the Olympics - not much to see, just another taped Nikon body with only a "D" on the strap:
The last one is another Nikon D4 fake from a Russian forum - some of the buttons on the back are PS-ed: