TV love...I want what they’re having

You know your views are becoming serious warped when you start coveting the relationships of TV couples... but that’s where I’m at this week.
Call me weird, but I’ve always loved the zing between Charmed's resident married couple, Piper and Leo. OK, he’s a White Lighter with duties up in the sky; she’s a witch and constantly under demonic threat, but the good times look pretty damn good to me.
I know sex isn’t everything in a relationship (especially when you don’t have access to toothpaste, make-up or matching lingerie) but Kate and Sawyer seem to make it work on Lost. Even when they’re stuck in a cage together.
I also can’t help envying the craziness between Gaby and Carlos on Desperate Housewives – you just know these two love each other underneath all the insults and offshore drilling. And let’s not forget Izzy and Denny on Grey’s Anatomy. His heart condition meant no hot dates to speak of, but sparks still flew between these two – before, of course, he karked it and she worshipped the porcelain in her prom dress.
TV couples I don’t envy? Carrie and Big. I know, I know. I can hear SATC fans screaming and bashing their computer screens in anguish. But I just didn’t get their thing. Carrie and Aiden, sure. But I’m biased: Aiden had chunky man hands and liked to build things, which kinda does it for me. OK, totally does it for me.
My all-time favourite TV couple? Medium’s Alison and Joe. They’re ga-ga for each other. They have the cutest kids. They work in interesting jobs - and they manage to get on despite having radically opposing views about science and the supernatural. They drink beer late at night and snog on the couch. He even wakes to ask if she’s OK whenever she’s had her latest nightmare about the local murderer / rapist / paedophile. Best of all, Allison never needs to ask what Joe's thinking – she can simply use her psychic powers to sort it out. Perfect.
On that note, who’s your favourite TV couple and why?