The Doctor Who star turns 31 today (October 28) so here's 11 reasons why we love the 11th Doctor - from bow-ties to beheadings to Breaking Bad...
Matt Smith loves Doctor Who just as much as you do...
Throughout his tenure on the series, Smith has always spoken passionately about his deep love for Who, telling The Guardian in 2011: "You're never bound by logic, or time, or genre, or space, or location, which is what makes it such an ingenious televisual conceit."
Matt Smith has excellent taste...
Smith counts record-breaking zombie hit The Walking Dead and Emmy favourite Breaking Bad ("I'd love the Doctor to meet Heisenberg") among his favourite television shows.
His music taste is also excellent, naming prog rock legends Radiohead as his favourite band in 2010: "I admire the musicianship, I admire the soul that goes into it, and the execution and the work, the preparation. Everything is done right, I think, and done with good intention and soul and heart and good spirit. They are a lesson to us all."
Matt Smith has incredible hair
Let's hope Matt doesn't stick to the skinhead look - his long locks were a thing of beauty and - as a few unfortunate behind-the-scenes shots from his final Doctor Who episode proved - such an incredible barnet cannot be successfully replaced by any wig.
Matt Smith is a big softie
One of the reasons Matt's so universally loved is, of course, his sensitive side. In this almost unbearably adorable 2013 interview, he admits his favourite word is "snuggle" and that he thinks love feels "fuzzy".
Matt Smith is an incredible dancer...
This clip from 2010's Doctor Who episode 'The Big Bang' says more about Mr Smith's prowess on the dance-floor than mere words ever could.
Matt Smith has excellent taste - part two...
Matt is also extremely discerning when it comes to celebrity crushes - he worked with actor-turned-director Ryan Gosling on the upcoming flick How To Catch A Monster and admitted to having "admired his abdominals" at length.
And don't be surprised if you spot Smith in line for The Hunger Games: Catching Fire next month. Asked by a fan at 2013's Comic Con in San Diego what would be on his bucket list, the sci-fi star replied: "I'll start with Jennifer Lawrence..."
Matt Smith brought back the 'Peace' sign
Once an out-dated 'hippie' gesture, now the *only* way to pose at a photo-call - Matt is a big fan of throwing up those two fingers.
Matt Smith once be-'eaded a detectiff...
If you've seen pitch-black 2008 film comedy In Bruges, then you might remember Ralph Fiennes's performance as hot-tempered gangster boss Harry Waters. What you won't remember is this bloody cut sequence which stars Matt as a young Harry.
It's easy to see why the scene was deleted from the final print - it's poorly realised and tonally at odds with the finished film. But Matt's absolutely brilliant in it.
Matt Smith rocked 7,000 people at Glastonbury
Taking to Glastonbury's Other Stage on June 27, 2010, Matt waggled his fingers, spouted some Doctor Who gobbledegook and introduced to the stage Orbital, who famously produced a phenomenal remix of the Who theme tune.
Orbital's Paul Hartnoll later told Digital Spy that Smith was "absolutely peaking" at the time - which according to Urban Dictionary means you are "at your prime" and nothing more untoward.
Matt Smith is going to play Patrick Bateman in American Psycho: The Musical
"Hopefully the work I do after coming off the Doctor will be of a different tone," Smith said prior to quitting his iconic role. He wasn't kidding - one of his first major projects post-Who will be a song-and-dance adaptation of Brett Easton Ellis's controversial 1991 novel.
Even Ellis himself - a man known for, erm, speaking his mind - had only kind words to say about Matt.
Matt Smith is an incredibly nice guy
Any fan or journalist who's been lucky enough to meet Matt will tell you what a thoroughly charming and engaging chap he is. Untouched by stardom, Smith has time for everyone and is pretty much the greatest ambassador that Doctor Who could've hoped for these past three years. The show will miss him.
Are you a fan of Matt Smith? Leave the big man a birthday wish below!