*  I usually play this C with a G in the root (332010) as I'm lazy and this 
makes 4th bar simply a movement of one finger rather than a chord change, 
which is good considering the progression is about to start again...  ;) 
Technically leaving it open is fine too, however I'm 99% sure that she never 
hits that bass e in Haircut. 
 
 
Picking pattern is something like this: 
 
 
   C             C/B          Am              C     G 
e|-------0------------0------------0----------------------| 
B|---------1------------1------------1----------1----0----| 
G|-----0-----0------0-----0------0-----0---------0----0---| 
D|--------------------------------------------------------| 
A|-3-------------0h2----------0--------------3------------| 
E|-------------------------------------------------3------| 
 
 
It isn't quite right, but it's close. 
 
 
This is played on occasion (ends of verses, etc) on the last bar instead of 
C and G. 
 
 
   G 
e|-------3-------| 
B|---------3-----| 
G|-----0-----0---| 
D|---------------| 
A|---------------| 
E|--3------------| 
 
 
There is also another part (the break about 1/3 in) where a G7 is used with 
roughly the same pattern, kinda like this... 
 
 
 
   G             G           G7        |-3-||-3-||-3-|* 
e|-------3------------3--------------1----1----1----1-----| 
B|---------3------------3--------0-----0----0----0----0---| 
G|-----0-----0------0-----0--------0-----0----0----0----0-| 
D|--------------------------------------------------------| 
A|--------------------------------------------------------| 
E|--3------------3-----------3----------------------------| 
 
 
I can hear an upward moving run where the triplets(?) are played, but I 
don't think it's her guitar, perhaps another one, or one of the other 
instruments, or I'm going nuts. 
 
 
 
* I think these are triplets, however I'm too tired right now 
  to think about it  :) 
 
 
 
So yeah, peice it all together and off you go, 
And the song ends on a C!