Below are my picks of the week's most notable TV shows, returning/premiering to UK screens this week...
The Dentists (ITV, 8pm) Documentary going behind-the-scenes of the University Dental Hospital in Manchester.
Benefits Britain: Life on the Dole (Channel 5, 9pm) Documentary series looking at the lives of people on the dole. (1/4)
★ Alan Davies: As Yet Untitled (Dave, 10pm) New comedy chat show. Guests are Noel Fielding, Jon Ronson, Andrew Maxwell & Kerry Godliman. (1/5)
The Virgin Killer (Channel 4, 10.05pm) Documentary about Elliot Rodger, who murdered six students and injured thirteen others in nine locations across Santa Barbara, California.
The Auction House (Channel 4, 9pm) Documentary series going behind-the-scenes of Lots Road Auctions in Chelsea. (1/3)
The Girl Who Talks to Dolphins (BBC4, 9pm) Documentary about a 1960s attempt to teach a dolphin the English language.
★ Blood, Smack & Tears: Afghanistan's Heroin Hell (BBC3, 9pm) Documentary about two drug users in Afghanistan, who are trying to kick the habit.
Seven Wonders of Brazil (BBC2, 9pm) Documentary exploring the country's Christianity.
Isle of Wight Festival 2014 (Sky Arts 1, 9pm) Highlights of the annual music festival. Featuring Boy George, Inspiral Carpets, Biffy Clyro, Calvin Harris, Rudimental, Katy B, Alison Moyet, and more.
★ Friday Night Dinner (Channel 4, 10pm) Series 3 of the outrageous family sitcom. Starring Simon Bird, Tom Rosenthal, Tamsin Greig, Paul Ritter & Mark Heap. (1/6)
The Abba Years (Channel 5, 8pm) Music retrospective on the popular Swedish group.