This week's Top 10 TV and radio catch-up 3) Horizon: How Small is the Universe? iPlayer (Until September 17) Those who enjoy TV that makes their brains hurt will love this documentary on mini black holes and superstring theory, with lots of zooming graphics as we go subatomic. 4) Dragons" Den iPlayer (Until December 9) The talent show for budding entrepeneurs is now in its tenth series, and the opening episode includes a former boxer and a chip shop owner from Warrington pitching ideas they hope will make their fortune. 5) Dead Good Job iPlayer (Until September 19) Don't let the crass title put you off this thoughtful series about the funeral trade. Episode one follows three very different funerals as the speed of a Muslim burial is contrasted with a biker's send-off, and the preparations of a terminally ill woman. 6) The Great British Bake Off iPlayer (Until November 1) Beef Wellington, hand-raised crusts and American pies are the bakers" most challenging projects yet as pie week starts on the TV cookery competition. The narration in a tone of high seriousness only adds to the fun. 7) The Reunion iPlayer (Available) Sue McGregor reunites the creators of Dolly the cloned sheep, born in 1996, who remains a landmark in genetic and regenerative medicine research. 8) One Born: Twins and Triplets 4OD (Until October 11) This medical programme has never been for the fainthearted, but the physical and emotional challenges of multiple births make for tense television as four couples await the arrival of their babies. 9) The Ceasefire Generation Geoffrey Beattie returns to his native Northern Ireland for this radio feature to ask 18 year-olds, not yet born when the IRA laid down their arms, for their thoughts about the future. 10) The Audience 4OD (Availble from Friday night until October 13) A new reality show with a twist. Dairy farmer Ian allows an audience to follow him around for a week to make a life-changing decision on his behalf.