I love the bass run on "Is She Really Going Out With Him?" - it's interesting and creative; not overblown/busy at all. The rest of the song seems to work around the bass; the bass part is the centerpiece of the song. However, my favorite thing about Graham Maby's bass line is the tone: his picked, muted right hand on the Fender Precision bass creates a sound that is meaty and round - quite similar to the legendary Rickenbacker 4001. And look how well he plays along with the prerecorded track below!
On a side note - what the fuck is with that dumbass that is introducing them?