Plug In or Zone Out?

Friends and acquaintances, confidants and colleagues, and the rest of you ... whom I probably don't really like, I have one question.

It may be more of a personal-preference inquiry than a question, but I want to get as many takes as possible: If you know you're going to see a band in concert soon (i.e. one Radiohead, or whatever your band of choice might be), do you A) listen to them as much as possible in the build up to the show, maybe to create excitement or re-familiarize with the music , or B) completely ignore them in hopes that the music's relative newness showers over you at the show and you appreciate it that much more?

I ask because I'm seeing Radiohead live for the first time in about 3 weeks in New York, at All Points West Festival. I'm hoping for a near-religious experience (it's their last show in North America this year, I believe) at the most, a fucking awesome show at the least (which is probably a given unless the band dies in some horrific plane crash on the way there ... knock on wood ... or get I dysentary that weekend or something).

Anyway, no right or wrong answer, just wondering.