Mammoth

The 2nd series of Mammoth is out on iPlayer - just 3 episodes, and is equal to the first. If you haven't seen this yet, it's about Tony Mammoth, a PE teacher who goes on a ski-trip in the 1970s and gets caught in an avalanche. Forty years later he is found and brought back to life... and gets a job back in teaching - bringing a 1970s mentality to the present day (a reverse 'Life on Mars'). Cue Parents' evenings, driving his car onto the football pitch while teaching, and sunbathing in the long jump pit...

And a few geography teacher jokes thrown in of course... and theme music by Mike Post!

As this Guardian review says:

He no longer knows the rules of society. He can’t smoke a pipe at school. Modern women don’t like it when he chats them up at all times. He leaves the engine of his Ford Capri running to “keep it warm”. Drink-driving is no longer “fashionable”. There is no longer a woodwork department at the school, which baffles him: “What do you do with the thick kids?”