The doctoring of photos, once considered the reserve of tyrants and UFO nuts, is becoming increasingly widespread.
Below we present 20 of the most striking, interesting and controversial fake photos, most of them produced in the last five years.
1) Shark lunges at helicopter
2) World Trade Center tourist
4) Ann Widdecombe's mixed messages
5) Chairman Mao airbrushes out his former friends
6) Snowball the monster cat
8) Antelopes and trains in harmony
9) Tsunami captured from tower block
10) Bush reading upside down
11) Shark sneaks up on scuba divers
12) John Kerry with Jane Fonda
13) Giant skeletons discovered in India
14) Benito Mussolini, the fearless horseman
15) Karl Rove's 'secret file'
16) James Purnell doctored at hospital
17) Soldier doll held hostage in Iraq
18) Fidel Castro made to look like Hitler
19) Oil rig, tornado and lightning strike