Rock/Alternate Music Search

I am expanding my music library with new/old rock, alternative bands. Here are few I stumbled upon on itunes. I am falling in love with iTunes! I don't get a chance to listen to public radio much and don't watch MTV... So, I am pretty left behind when it comes to finding new music. Drop by a hint if there is a new rock/alternative album, single worth checking out.
A few I added to my library:

• Nora Jones is Awesome too. Nice jazzy, soothing music for a somber mood ...
• LifeHouse - Who we Are
• GreenDay
• Shinedown
• Nickleback - If everyone cared

Peace out!

Sadie.