Great song, you can see Ben Gibbard playing the song for much of this video
- http://www.youtube.com/watch?v=qkk5wViJo-I
 I  I figured it out by ear, didn't check if I'm using the exact same fingerings as him 
but they looked similiar.

Standard tuning:

My notation:
b = bend
r = release bend (i.e. lower it, not let go)
s = slide
v = vibrato

Main riff

E|----------------------------------------------------------------------|
B|----------------------------------------------------------------------|
G|--------11--14b16r14-11----------------------------11-11-11-11-11-11v-|
D|-----12-------------------14-12--14-14-14-14-14-12--------------------|
A|----------------------------------------------------------------------|
E|----------------------------------------------------------------------|

Second time playing main riff (after 11s):

E|------------|
B|------------|
G|------------|
D|----9-9-9-9-|
A|------------|
E|------------|

Third time (after 14s and 12 and D):

E|--------------------------------|
B|--------------------------------|
G|--------------------------------|
D|----11-11-11-11-11-11-11s9s7s12-|
A|--------------------------------|
E|--------------------------------|

At 1:53 in the video it sounds like there's a few layers of guitar which I can't quite 
distinguish although it sounds like some sort arpeggio from this chord

E|----0-|  Then it goes (roughly) E|----------10----| A few times (with
B|----3-|                         B|-----10------10-| variations like a12 (x02210@1)on
G|----2-|                         G|---9----9-------| bottom estring (022000@1)D|----0-|                         D|----------------|
A|------|                         A|----------------|
E|------|                         E|----------------|

Bridge-like thing:

E|--------5----|     E|------5---|
B|------8---8--| (x7)B|----7---7-|  (x4)  These two sections then repeat
G|----7--------|     G|--7-------|        themselves, just listen for the
D|-------------|     D|----------|        changes, then goes into main
A|-------------|     A|----------|        riff
E|-------------|     E|----------|



Then the little mini-solo/break thing (there's no emphasis on the slide, it's just to 
set you up for the rest of the lick

E|------------------------------12-12------|
B|-----------10-10----12-12----------12----|
G|------2s11-------11-------11---------11--|
D|----0------------------------------------|
A|-----------------------------------------|
E|-----------------------------------------|

Then main riff til the end of the song.

This was my first tab, so sorry if it's awfully sloppy but I'm confident that it's 
accurate.  Will check every now and again for any corrections.