Taboo

In 2007, Nobel Prize-winner James Watson caused controversy when he was quoted referring to research that suggests black people are less intelligent than other races. Rageh Omaar finds out whether there is any truth to those claims, meeting scientists who believe the research supports the view that races can be differentiated as well as those who oppose the idea.

When sex deviates from societal norms, it becomes taboo; what are the top five sex taboos? An unflinching look inside the strange world of some very unusual people, including a man with a fetish for balloons, and Dutch sperm donor Ed, who has fathered 85 children.

A love affair with balloons, a fetish for female bodybuilders, and a snuggle up to a shrunken head in bed… Taboo promises to be one of the strangest shows you'll see this year. Collectors reveal their obsessions, including London curiosity shop owner Viktor Wynd, whose store sells skeletons, alleged celebrity faeces and Russell Brand's hair to Jim's 'Noah's Ark' with 550 live animals, discover how some collectors' passions cross the line.