Jeremy: "You can't marry her, she makes you tense, nervous and unhappy! I don't make you tense, nervous and unhappy!"

Mark: "Yes you do!"

Jeremy: "Yeah, but not to the same extent."

That was paraphrased by the way. But it pretty much sums up the Peep Show world - everything makes you uncomfortable, it's just all a question of levels. And Mark's about to marry Sophie, a woman he considers sweet and lovely, but whom definitely makes him feel very uncomfortable when he realises he's going to be trapped in a lifetime of unhappiness with her. Welcome, ladies and gentlemen, to the grimmest wedding day ever seen on Channel 4, probably TV full stop.

I mean, this was horrific. It was soul-destroying, it was bleak, it was heart-breaking, it was unremittingly dark. And man, if anyone can do unremittingly dark, then it's Peep Show. And the strange thing is, the writers seemed to want to make it clear that there is absolutely nothing funny about entering into a marriage with someone you don't love... and then went ahead and derived the funnies from it anyway. Because this was funny - one of the better episodes from this series, certainly - but you had to get through layers and layers of self-loathing to find the humour.

For a moment, you thought - yes! The writers have finally given way to a tiny glimmer of light, a tiny glimmer of resolution! Before the wedding, Jez confessed to Mark that he had kissed Sophie, thus giving Mark a reason for calling off the wedding - oh I can't remember a similar feeling of relief: the show, and Mark, were both going to be saved by a neat piece of narrative cohesion! Thank the lord! But this is Peep Show. It didn't last long. Sophie's mum convinced Mark that a drunken snog isn't a good enough reason to stop the wedding, so he goes and hides, while 73 missed calls accumulate on his phone. And they get married - both in floods of tears ("they're tears of joy, that's the story") - but Sophie jumps out of the wedding car two minutes later, having realised that this was a major mistake.

There was a nice thread through this episode, though, of Jez genuinely trying to persuade Mark to do the right thing, and their friendship was brought to the fore. I mean, that's hardly compensation for that unremitting darkness, but still, it went part of the way. He'd have gone and got Mark a nice breakfast if only somewhere near them did that sort of thing. They hug after the wedding - which, by the way, was the only non-point of view shot of the episode, just to highlight its importance. Aww.

And that's what we're left with at the end of the series - two men who couldn't be more different, but who can't really function apart, because they feel less tense, nervous and unhappy with each other than with anyone else. And in Peep Show world, that's a real blessing. [annawaits]