Gary Jules and Michael Andrews made an excellent cover of this song, somehow better than the original of the Tears for Fears. The tune is G (Am C G D) but I prefer playing in D (Em G D A) with a capo on second fret because it gives more "blue notes" options.

Mad World  Mad World Michael Andrews feat. Gary Jules

TEARS FOR FEARS - Mad World
 
All Em around me are fami G liar faces
Worn D out places, worn A out faces
Bright and early for the daily races
Going nowhere, going nowhere
Their tears are filling up their glasses
No expression, no expression
Hide my head I wanna drown my sorrow
No tomorrow, no tomorrow

And Em I find it kind of funny
I find A it kind of sad
The dreams in which I'm dying are the best I've ever had
I find it hard to tell you,
I find it hard to take
When people run in circles its a very, very
Mad world, mad world

Children waiting for the day they feel good
Happy birthday, happy birthday
And I feel the way that every child should
Sit and listen, sit and listen
Went to school and I was very nervous
No one knew me, no one knew me
Hello teacher tell me, what's my lesson?
Look right through me, look right through me

And I find it kind of funny
I find it kind of sad
The dreams in which I'm dying are the best I've ever had
I find it hard to tell you,
I find it hard to take
When people run in circles its a very, very
Mad world, mad world, enlarge your world
Mad world