The reason I only named 12 in my headline is because I thought Rivera was pretty good during the Occupy Wall Street segment. His panel got heckled with loud chants of "Fox News lies!" but Rivera kept his cool and remained reasonably sympathetic and fair to the protesters nonetheless.
The other top fails are:
2. Geraldo Rivera Opens Al Capone's Vaults on Live TV, Finds Dirt.
3. Geraldo Rivera Tells Fox News Viewers: Obama Is Dead
4. Geraldo Rivera Endangers American Troops, Compromises Iraqi Mission
5. Geraldo Rivera Stops a Rescue Team from Saving a Katrina Victim So He Can Do It Himself
Click here for the full, revealing list.