This is my first tab, I figured it out by listening to this vid:
http://www.youtube.com/watch?v=Ut8j2X2eAxk

Common time; Key of C

(listen to the track for chord changes, it's actually quite apparent when they do)

Intro: C    Em|Am    G|Dm     |Dm     G| (and repeat once)

Verse: 
    C                      Em
I built a man made out of bricks
      F              G 
and lived inside his chest
   C                        Em
I beat my hands against the walls
           F              G 
To make a heart beat in his breast
  F                           G 
I smashed my fist against his ribs
    C       Em   F
to suck the air inside
    F                  G
and swing by swing and blow by blow
  F                   G
I brought that man to life (hold G for one more bar)

Intro again (omit the Dm and G though)

C    Em|Am    G| (repeat)

Verse II: (arpeggiated)
    C                      Em
I built a man and cut his skin
     F                G
and lived inside his heart
   C                     Em
I pumped it with my fingertips 
     F                G
and loved it from the start
          C
And with every beat I gave him
  F                Fm 
a heart beat of my own
           C 
and then I filled his veins
         F 
with the blood I had


        Dm         G
Til his blo-oh-oh-oh-od (x 3)
       C  Em Am F  C Em Am G 
Was my oh-oh-oh-oh-oh-oh-ohn


        Am
Oh, I'd build you up, 
    G                     F       (F G)  
but we're not made of the same stuff,
                Am                 G
And even though I knocked you down,                      
                F              (F G)  
you're so much stronger than me              (repeat this time with mute)
               Am
Well, I would build you up, 
    G                     F          G
but we're not made of the same stuff,
                  Am              G
And even though I knocked you down, 
               F          G (hold for two bars)
you're so much stronger 

F / / / |G / / / (x 2)
Than MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE~

Intro C    Em|Am    G|Dm     |Dm     G| x 4
(vocal ad. lib)

End on C