In fact, we're already missing it so much that we're thrilled that the DVD boxset is out on Monday! Go on, spend your Christmas money on it...
To celebrate, we called up Iwan Rheon (unfortunately before we'd seen the amazing and game-changing season finale) for a bit of a chat about Misfits, understanding time travel, Simon and Alisha and the upcoming US remake.
So series three was amazing - we had everything from Nazis to zombie cheerleaders. Are you surprised that it gets bigger each time?
"I don't know. I think when you've got the script there and the people behind Misfits do such a great job and they work really hard... I don't know. I'm just really glad really that people are liking this new series."
Did you enjoy filming the zombie cheerleader episode - smashing them up and getting a bit violent?
"Yeah, that was a really funny episode! It was quite surreal because we just had all these beautiful young women cheerleading, and then all of a sudden they go into makeup and they come out and they've got bits of skin hanging off them. Yeah, we had to smash them up. It was a really surreal bunch of days."
What's your favourite moment from this series?
"I don't know. I think doing the Nazi episode was good fun with all the guns and stuff, because I've never done anything quite like that. It was almost like we stepped out of the usual Misfits orange jumpsuits and all that and we got to do something completely different. It was like doing a different job in a way. Yeah, it was good fun."
I've been loving Simon's little bromance with Rudy - have you?
"[laughs] Yeah! It's painfully difficult because he's the funniest person in the world, and trying to keep a straight face in scenes with him is practically impossible, as I've discovered."
Simon's had some amazing facial expressions this series - is it hard to keep those going when you're trying not to laugh?
"Oh no, they're probably all a result of trying not to laugh! There's no acting going on..."
What do you think will happen for Simon and Alisha - do you think they could be together forever?
"I think they could be together forever, yeah."
We've seen a bit more of the Superhoodie storyline this season - are you happy with how that's been turning out?
"Yeah. I think they could have done more. But I think it's a difficult one because it was so heavily in the last series, and obviously they want to do different things. But yeah, I really enjoyed doing episode three with the development, and you kind of see later on in the series how that develops more as well."
Because Simon is probably the character who's changed the most.
And with the Superhoodie storyline, the Nazi episode and so on, do you try and understand the time travel or just forget about it?
"The Superhoodie stuff I've kind of got it, yeah."
Really? Because it's pretty complicated!
"It is, yeah! Well, it's the thing from Terminator! It's like a time loop more than anything. The Nazi episode, that I don't know. It's nothing really to do with me! I think sometimes you have to [take it as it is] with Misfits. Once you start to really get into time travel it's just a bit of a mindf**k!"
You killed another probation worker or two this series - well done!
"That was nothing to do with me!"
Do you think any will ever survive, or will they all just eventually die?
[laughs] "I think there's a link between the Misfits and probation workers now forever - neither can survive if the other lives!"
Did you have fun working with Craig Parkinson, who played probation worker Shaun? He was great.
"Yeah, yeah, he's really good. He's a brilliant actor. It was really good fun. He was another one who made me laugh all the time. They all pick on me!"
Who's the worst for laughing?
Do you hold up filming?
"No... The thing is, I try not to, but I'm targeted because they know I'm weak! Because I have all these really serious lines, and quite often they're ridiculous. So I have to deliver them with complete sincerity and a completely straight face, and it just makes it quite difficult when you're faced with people like Joe Gilgun."
We know there's going to be a US remake now - how are you feeling about that?
"I'm very interested to see it. Yeah, I've got no problem with it at all. I think it was always going to happen. It'd be really interesting to see how they need to adapt it to a mainstream American audience, or whether they don't and keep it quite like it is over here. I don't know."
So you'll be watching?
"I'll definitely give it a watch, yeah. Definitely."
I'd imagine it would be pretty weird seeing someone else playing Simon...
"Yeah, I know, it would be weird! I always find the transition between Britain and America and what happens interesting - all of a sudden you've got this show that's completely different, almost, but with the same premise, like The Office or something like that. But yeah, it'll be really interesting to see what they do with it."
So what do you think it is that makes Misfits so popular?
"I just think it's always pushing the boundaries of drama and comedy at the same time. And I think all the characters are really well-formed, especially now that we've done three series and we're kind of comfortable in the characters. I think everyone can sort of relate to a character or a couple of characters, and you end up really liking them. That's only because from watching it myself, you really get into the characters and what they're doing. I just think it's really cutting edge. They're really pushing the boundaries of what you can say on television."
It's definitely doing that! Are there ever any lines you can't believe you have to say? I guess you don't get as many as some of the others.
"Yeah! I think there's been some lines that other characters have said where I'm just like, 'I'm not sure if that's allowed...' There's a couple of them, yeah!"
And you said everyone relates to a character in Misfits - who do you relate to the most?
"I relate most to Kelly! We're really similar!"
The third series of Misfits is released on DVD on December 26.