Long time lurker, first time poster
I was wondering what to do with NFC too. Installing google wallet is super easy though, I just did it today. I'm not rooted/unlocked-bootloadered or any of that. I just downloaded the apk through the browser on my phone, simple as that. Just go to this link with your phone
com.google.android.apps.walletnfcrel-2.apk (got this via droid-life). MAKE SURE you go to settings/personal/security and check that Unknown Sources box (Allow installation of non-market apps) otherwise it won't work. It installed just like it would through the market and I was able to sign up and get my free $10 on the google debit card. NICE.
Been reading about those NFC stickers and that NFC Task Launcher app that people are using. That seems pretty cool. You can install these stickers in certain places (bedroom, office, car, etc) and set it up so when you tap your phone on them, this app will change your setting (ring/vibrate, wifi on/off, bluetooth, etc). Haven't done this yet though.