See the thing is Acrid, I love Zappas hooks, he's an incredible musician. I just tend not to like where he goes after the intro, it's like he has the great little refrain, then goes off on a crazy tangent noodling away. That's why I suggested you'd probably heard the best of Willie The Pimp after a few seconds for me. I really enjoyed the opening 30 seconds of so off both the tracks you posted, but I lose interest fairly quickly. I know he's highly respected and massively talented, I just don't dig his offbeat, improvised style.
He's pretty funny though, I'll give him that. Who calls their daughter Moon Unit? What a joker.
Also, there is a great little indie music shop in Sunderland called Hot Rats. And on the subject of lush intros:
Pavement - Blue Hawaiian
Such a smooth groovy jam.