Hmm this is a tuffie. I am a huge fan of Breaking Benjamin. But I also like Nickelback, Seether, Linkin Park, and several others. But if I had to choose one, Breaking Benjamin is probably it.
RED HOT CHILI PEPPERS , no doubt
I also like death by stereo, flogging molly, mad caddies, metallica,rise against, tenacious d, tiga, armand van helden
I'm a big fan of Down Here. They aren't very well known (most likely because they are from Canada and a Christian group), but I love their lyrics and style.
Green Day, Simple Plan, Iron Maiden, Slipknot and (if individual artist) James Blunt, Daniel Powter, CPM 22 (brazilian), Jack Johnson and Tihuana (another BR band).