This is my favorite Tool song at the moment, but its always changing.

(20x, palm mute)
e|-------------------------|
B|-------------------------|
G|-------------------------|
D|-----------------2---0---|
A|---0-1-2---0-1-2---0---0-|
E|-5-------3---------------|

(8x, 8th time play a2, palm mute everything except last note on a2)
|-----------|
|-----------|
|-----------|
|---2-------|
|-0---0-3-5-|
|-----------|

  |-----|
  |-----|
a2|-----|
  |---2-|
  |-0---|
  |-----|

(12x, palm mute)
|-------------------------|
|-------------------------|
|-------------------------|
|-----------------2---0---|
|---0-1-2---0-1-2---0---0-|
|-5-------3---------------|

(16x, 8th and 16th time play a2, palm mute everything except last note on a2)
|-----------|
|-----------|
|-----------|
|---2-------|
|-0---0-3-5-|
|-----------|

  |-----|
  |-----|
a2|-----|
  |---2-|
  |-0---|
  |-----|

(4x)
|---------------------|
|---------------------|
|---------------------|
|-4--3--6--7----x-x-x-|
|-4--3--6--7----x-x-x-|
|-4--3--6--7----x-x-x-|

(1x)
|------------------------------------------------------------------------------------|
|------------------------------------------------------------------------------------|
|------------------------------------------------------------------------------------|
|------------------------------------------------------------------------------------|
|-12-12-10-12--12-12-10-12--13-10-12--12-12-10-12-12-12-10-12--12-12-10-12--13-10-12-|
|------------------------------------------------------------------------------------|
(continued)
|----------------------------------------------------------------------------------------------------|
|----------------------------------------------------------------------------------------------------|
|----------------------------------------------------------------------------------------------------|
|----------------------------------------------------------------------------------------------------|
|-10-12-10-12-12-13-10-12--10-12-10-12-12-13-10-12--10-12-10-12-12-13-10-12--10-12-10-12-12-13-10-12-|
|----------------------------------------------------------------------------------------------------|
(continued, 8x)
|-----------------|
|-----------------|
|-----------------|
|-----------------|
|-10-12-10--13-12-|
|-----------------|

(10x)
|----------------|
|----------------|
|----------------|
|-10--5-6--9-7-9-|
|-10--5-6--9-7-9-|
|-10--5-6--9-7-9-|

(16x)
|-----------|
|-----------|
|-----------|
|---2-------|
|-0---0-3-5-|
|-----------|

(8x, palm mute)
|-----------|
|-----------|
|-----------|
|---2-------|
|-0---0-3-5-|
|-----------|

(4x, palm mute)
|----------------------|
|----------------------|
|----------------------|
|---2----------2-------|
|-0---5-3-5--0---0-3-5-|
|----------------------|

(1x)
|-----|
|-----|
|-----|
|-----|
|-----|
|-2-2-|

(8x, don't let notes ring)
|--------|
|--------|
|--------|
|-x-3--3-|
|-x-3--3-|
|-x-3--3-|

(12x, palm mute, after the 4th its the background of the next 2 riffs)
|---------------|
|---------------|
|---------------|
|-------2-------|
|-0-2-0---5-3-5-|
|---------------|

(4x)
|-------------|
|-------------|
|-------------|
|-3-x-2-x-x-x-|
|-3-x-2-x-x-x-|
|-3-x-2-x-x-x-|

(1x)
|-----------------------------------------------------------|
|-----------------------------------------------------------|
|-----------------------------------------------------------|
|-x-x-5-x-x-5-x-x-5-x-x-5-x-5-x-x-5-x-5-x-x-5-x-5-x-x-5-x-5-|
|-x-x-5-x-x-5-x-x-5-x-x-5-x-5-x-x-5-x-5-x-x-5-x-5-x-x-5-x-5-|
|-x-x-5-x-x-5-x-x-5-x-x-5-x-5-x-x-5-x-5-x-x-5-x-5-x-x-5-x-5-|

(4x)
|-------------------|
|-------------------|
|-------------------|
|-------------------|
|-5/9-9/12/15-15\14-|
|-------------------|

(8x)
|---------------------------------|
|---------------------------------|
|---------------------------------|
|---------------------------------|
|-0--9--12--14--12--0--9--0--7--5-|
|---------------------------------|

(8x)
|---------------|
|---------------|
|---------------|
|-0-0-0-7-0-3-5-|
|-0-0-0-7-0-3-5-|
|-0-0-0-7-0-3-5-|

(8x, palm mute)
|-------------------------|
|-------------------------|
|-------------------------|
|-----------------2---0---|
|---0-1-2---0-1-2---0---0-|
|-5-------3---------------|