Despite being bullied on the street by the local children, Mark sets himself the task of sleeping with Toni from next door, basing his seduction technique on the Battle of Stalingrad...
Mark makes a friend at a business conference - but will it turn into more than just friendship? And Jeremy is forced to consider Super Hans as a replacement flatmate.
Jeremy tries to wow Toni with his new job in a music studio, while Mark gets passed over for promotion in favour of Sophie, and goes slowly round the twist.
Can you love two people at the same time? Jeremy believes you can, and his gorgeous new American girlfriend puts his taboo bashing beliefs to the test.
Mark becomes depressed about Sophie living with Jeff, but Jeremy is not sure that self-mutilation is the answer. Besides, Jeremy and Jeff are getting on horribly well.
Some muggers steal Mark's precious BlackBerry, which puts him off his stroke with Sophie. Meanwhile, Jeremy faces a tricky dilemma over the love of his life and a potential threesome.
Jeremy is forced to consider getting an old friend sectioned. And he soon realises sectioning could be a good way of getting rid of other problem people...
Sophie and her new gay friend, Dom, take Mark to a gay club, where he pretends to take drugs. Meanwhile, Jeremy is on jury service, where he starts an ill-advised affair with the defendant.
Jeremy meets his hero - techno musician Russell 'The Orgazoid' - and ends up working as his handyman. But Mark gets suspicious, as Jeremy's job seems only to consist of making smoothies for Russell.
Jeremy has organised a stag weekend. This consists of Mark and Jeremy on a canal boat on the Shropshire Union Canal. Unfortunately, it's cold and there's nothing to do...
It's the big day: Mark is getting married to Sophie. Mark and his best man, Jeremy, set off in the car to the church, with a very hungover Super Hans in the back.
Mark and Sophie return to work after their non-existent honeymoon and Mark tries to deflect the inevitable bad PR attached to a jilter. Meanwhile, Jeremy and Super Hans's band play their first gig.
Jeremy finally runs out of money and finds himself on a downward spiral of hunger, homelessness and criminality. Meanwhile, Mark needs to find a girlfriend before his birthday party.
Jeremy's mother comes to visit for a family funeral. Her new boyfriend is a military man who Jeremy deeply resents, and who Mark idolises. Desperate to impress, Mark endures an extraordinary ordeal.
Jeremy and Super Hans get a band manager and play a Christian rock festival. Mark comes along as their roadie, and learns how to have sex properly for the first time in his life.
Mark gets into online gaming and live role-play with Dobby and wonders whether she may really be 'the one'. Meanwhile, Jeremy is brainwashed - loosely speaking - by a cult.
Newly promoted Mark decides to enjoy his additional power and wealth by splashing out on a boiler and a 'creamy elephant' sofa, and by finding Jeremy a job in the office.
Jeremy realises that he's in love with Elena and decides to be less selfish in order to win her affection. He also thinks it might be a good idea to tell her he loves her, but Mark isn't so sure.
As a last desperate hurrah before the baby arrives, Mark and Jeremy decide to throw a party. For Mark, it's his last chance with Dobby, for Jeremy, it's an opportunity to make Elena insanely jealous.
Mark and Jeremy are at the hospital awaiting the birth of Mark's baby. Sophie is determined to have a natural birth and doesn't want Mark to transfer any of his anxiety to the baby.
Dobby, the object of Mark's desires, is going out with Simon, a graphic designer. Mark and Gerrard form the 'Dobby Club', devoted to winning her over. But who will ultimately triumph, Mark or Gerrard?
Jeremy tries to impress Zahra by holding a book group at the flat, but he's only ever read Mr Nice. Meanwhile, Mark is worried that he can't satisfy Dobby's sexual needs.
It's christening day for his baby, and Mark arranges to pick up Jeremy, the baby's godfather, from Zahra's flat on his way to the church. Unfortunately, the lads get locked in the hallway.
It's Christmas Day and Mark has invited his parents over for lunch. He's planned everything, but Jeremy is over-excited, and Dobby and Super Hans show up.
It's New Year's Eve, and Mark is depressed about Dobby, but Jeremy is determined that the El Dude Brothers are going to enjoy the night of their lives.
Mark has asked Dobby to move in with him, and Jeremy is faced with the prospect of moving out. But Jeremy is dragging his heels and Mark is worried that Dobby will move in with Gerrard instead.
Mark gets a lucky break when his book, Business Secrets of the Pharaohs, is accepted by a 'publisher'. Jeremy, in an attempt to kick-start his career, enrols on a life-coaching course.
Jeremy, desperate to find somewhere else to live, rekindles his old relationship with Mark's sister Sara, and moves in with her and her five-year-old son, Joshy.
Dobby is offered a job in New York. While she's still on the horns of a dilemma, Mark - who thinks she's lying - suggests they spend a weekend in the country...
Mark and Jeremy are reunited in the flat, Super Hans prepares for his wedding day, putting Mark under pressure as his best man. But there's a perk - Dobby will be there.
Jeremy and Super Hans come to blows over the rights to a tune they wrote back in the noughties, while Mark's play date with his son doesn't quite go to plan.
It's the last ever Peep Show from the El Dude Brothers. Jeremy is turning 40 - and it's hitting him hard - while Mark makes an audacious attempt to win the woman of his dreams.