Shape vs. Buckethead 
from Monsters and Robots 
as tabbed by Zach Osborne

I'm not putting the rhythm on some of the parts like this first riff (listen to how many times he plays it in the song)
I'll label it if I put the rhythm

[fb = full bend, br = start already bended and release gradually, ~ = vibrato

E---------21~~--17~~--12~~--9~~--8~~--7~~--6~~-------------------------
G--21~~------------------13~~------------------------------------------
B----------------------------------------------------------------------
D----------------------------------------------------------------------
A---------------------------------------------------------------0fb----
E-------------------------------------------------------------------0br

The second riff is (again, listen to the song)........ the 3rd riff is the same as the 2nd but with more harmonics
E
G
B
D
A--7fb (with the third and fourth bend use the cry baby pedal) on the last bend use harmonics
E

the 4th riff is (strumming is repeated a few times then) br = start bended and release....
the second part is with a cry baby pedal, a little bit anyway.
E---------------------------------------------------------
G---------------------------------------------------------
B-----------------10fb--12--13--10br--11--12--------------
D--4--4--4--2---------------------------------------------
A--4--4--4--2------------------------------------------7fb (mess around with the harmonics, cry pedal)
E--2--2--2--0---------------------------------------------

that's as far as I got, sorry. hope that helps from there.