Tonight's TV highlights

The Zoo 8pm, ITV1 Final programme in the series taking a look at London Zoo, and the outstanding conservation work it carries out. For a humble docusoap, it really does pack an awful lot in: sex, birth, death, and a mystery or two – such as, why has there been a 98% decline among the eels? As conservationist Dr Matthew Gollock says: "The fact they can survive anything, and they're not surviving, is really rather concerning." Elsewhere, a project to save Nepal's one-horned rhinos from poachers, and farting gorillas. AJC The Foods That Make Billions 9pm, BBC2 This three-part series tries to discover why we now consider luxury items such as bottled water, breakfast cereals and yoghurt to be "essentials". Why do we buy something we can get for free from a tap? The unsurprising answer is because we've been successfully marketed to. It's a fascinating programme, but you wonder which side it's on. Does it abhor big business? Or secretly admire its dastardly ways? JR Storyville: Mandelson – The Real PM? 9pm, BBC4 Filmed in the run-up to the 2010 general election, Hannah Rothschild's fly-on-the-wall documentary follows Peter Mandelson and his staff as they orchestrate a campaign that secretly they have already admitted to be "futile, fucked and finished". Apart from the odd moment of weariness and occasional hints of imperiousness, Mandelson keeps his guard well up throughout, maintaining his composure in the face of a tide of gaffes, off-screen tirades and sartorially untelegenic moments from Gordon Brown. Nonetheless, you sense the awe and fear in which he is held: as Jon Snow puts it, he "sucks the oxygen from the room" whenever he enters. DS Getting On 10.15pm, BBC4 We're nearly at the end of another stunning series. Hilary's cracking down on ward hygiene with his "infection control avatar" – a lifesize cardboard cutout of Howard that says, "Now wash your hands" when anyone walks past it. And Den locks horns with Dr Moore over the need for Beedy to rush back from Edinburgh to visit her frail mother. Hilary, meanwhile, is busy scolding Beedy for staying past visiting hours. "We do empathise. But it doesn't matter. You'll have to leave." It's made with incredible subtlety, beautiful ensemble playing and Peter Capaldi's assured direction. But don't take everyone else's word for it, watch this and marvel. JNR Young Hairdresser Of The Year 10.30pm, BBC3 A second run of shows celebrating young people with real-life skills, the point being that you don't have to be on X Factor to find career validation. Thanks for that. In this first instalment, George Lamb rounds up five top young choppers in order to find out who's the snippermost of the toppermost. WD Imagine 10.35pm, BBC1 Alan Yentob introduces Ron Galella, the American photographer widely considered to be the world's first professional paparazzo. Yentob makes a convincing case for Galella as a pathfinder to, and chronicler of, the age of celebrity, and as something of an accidental warrior for media freedom. Galella can claim to have taken his licks on this front: Jackie Onassis once ordered her Secret Service detail to smash Galella's camera, and Marlon Brando broke his jaw. AM