The Clash, The Hush Sound, and The Killers, Flogging Molly, and Alkaline Trio are definitely my top 5. I've recently gotten into The Pogues, Dropkick Murphys, Coldplay, Sufjan Stevens, Joe Strummer and The Mescaleros(Shame Joe Strummer is dead), and Death Cab for Cutie. I was going to buy an album by The Decemberists yesterday, but I didn't have enough money.
I used to be into emo stuff, but I got out of that mess pretty quickly.