My first tab: :-)

E-8-8-----8-8----8-8-7-7---7-7-7-7---|
B-----5-5-----5-5--------------------|
G------------------------------------|
D------------------------------------|
A------------------------------------|
E------------------------------------|

This riff starts around the 2.40 mark, and continues through to the end of the song. 
are a few variations towards the end, but this is the basic idea. Comments welcome.