Life on Mars (2006-2007)

For those of you wondering whether the experience of enduring Transformers: Revenge of the Fallen had turned me off popular culture, fret not. To detox, I've decided to splurge on all the critically-acclaimed telly I missed over the last few years while I was travelling the world, having life-shaping experiences and all that.

The first DVD box sets to land in my shopping basket? BBC's Life on Mars, the time travel/cop show with a premise so balmy it shouldn't work, let alone work so brilliantly.

The excellent John Simm is Sam Tyler, a Manchester police officer who is hit by a car in 2006 and wakes up in 1973. With no idea as to how or why he is living in the past, Sam struggles to fit in with the archaic, corrupt and thuggish 1970s Manchester police force led by Philip Glenister's eminently quotable Gene Hunt.

Tyler's time warp dilemma is mostly a subplot on the show, simmering in the background of each week's fresh, '70s-set police procedural. It's a time when forensic science is a developing field, when suspects and witnesses are treated with equal contempt and when it's perfectly acceptable to halt a murder investigation on account of it being "beer o'clock".

It's testament to the sheer quality of Life on Mars' that at no point does the concept ever feel naff. Jokes about the past and present are sly and subversive without ever seeming too cute; "There will never been a woman Prime Minister as long as I have a hole in my arse," bellows the sexist, racist, alcoholic, homophobe Hunt, who still remains likeable thanks to Glenister's commanding performance.

Dean Andrews as the boorish Ray Carling, Marshall Lancaster as the likeable Chris Skelton and Liz White as love interest Annie Cartwright are all perfect for their parts, but the real focus is wisely kept on Tyler and Hunt; their relationship represents a fascinating contrast between the morals and values of the 1970s and the present day.

Life on Mars is rich on nostalgia, truly capturing the essence of the seventies – the soundtrack is amazing (led by David Bowie's dizzying title track) and the cinematography drenched in all those browns and yellows commonly associated with the decade. This vivid detail of the 1970s constantly plays on Sam's mind, as he fights off voices and visions that suggest he's actually gone insane rather than back in time.

Both seasons deliver a pitch-perfect cocktail of intrigue, humour, action and drama through their highly successful meshing of the science fiction and crime genres. Thanks largely to the strengths of the show's two main actors, Life on Mars also succeeds in being strangely affecting; I challenge any other viewer not to share Sam's mixture of emotions each time he hears a voice beckon to him from the present day.

The programme's creators chose to follow the great British tradition of ending a show at the top of its game, and while Sam's predicament remains almost as intriguingly ambiguous at the end of the show as it was at the start, the finale is perfectly satisfying.

(As an aside, don't get Life on Mars confused with the gratuitous US remake, the finale of which sounds as awful as it is different from that of the UK version.)

If I sound like I'm gushing, it's because I am. Life on Mars is one of the finest shows of the decade. Thoughts on the show's sequel – the 1980s-set Ashes to Ashes, which recently premiered on ABC1 – will be here in the coming weeks.