Watch the Exotica online guitar lesson by Angus Clark from Hard Rock Survival Guide: Lead
There's a couple of cool licks in here, but the main thing to pick up on is the vibe. The F lydian section barely sounds lydian because it's just a slight deviation in the overall E tonality. It doesn't really give me a Simpsons vibe at all. The main section before the chords start changing is like an open canvas where I'm really imposing the harmonic thing on a rhythm part that isn't implying it at all, and I'm getting away with it because it's rock n roll. My favorite thing here is probably the half step trills. Fun stuff and very dramatic.