This is a great weezer song from their album pinkerton.  Very easy to play.
Tune bass down half a step


riff 1

Gb |---------------------------|
Db |-------0--0--0-2-0---------|
Ab |-------------------3-2--2--|
Eb |-3--3----------------------|

riff 2 (chorus)

Gb |-----------------------------------|
Db |-----------------0-0-0-0-2-2-2-2---|
Ab |---------3-3-3-3-------------------|
Eb |-3-3-3-3---------------------------|

riff 3:

Gb |----------------------|
Db |----------------------|
Ab |-3--2--0(let ring)----|
Eb |----------------------|

riff 4:

Gb |---------------------------------------------------------|
Db |-3-3-3-3-3-3-3-3-----------------------------------------|
Ab |-----------------3-3-3-3-2-2-2-2-0-0-0-0-0-0-0-0-0-0-0-0-|
Eb |---------------------------------------------------------|

riff 5:

Gb |--------------------------------------------------|
Db |-3--3--3--3---------------------------------------|
Ab |-------------3--2--------0(let ring)--------------|
Eb |-------------------3--0-------------3/10/3-3/10/3-|


song structure:

riff 1 x 10
riff 2 x 3
(silence for 4 beats)
riff 3 x 1
riff 1 x 10
riff 2 x 3
riff 4 x 1
riff 1 x 4
riff 2 x 3
riff 5 x 1
riff 1 x 4