Last.fm made this so easy.
I'm into ska, pop punk, hardcore, power metal and electronic, including:
Streetlight Manifesto, Bomb The Music Industry!, Between The Buried And Me, A Day To Remember, Big D and the Kids Table, Tokyo Ska Paradise Orchestra, Sum 41, The Black Dahlia Murder, Reel Big Fish, Winds Of Plague, Protest The Hero, The Arrogant Sons of Bitches, Michael Henry and Justin Robinett, OC Times, Owl City, Rise Against, Less Than Jake, Fight Fair, Children Of Bodom, ELLEGARDEN, NOFX, Job For A Cowboy, van Canto, Avenged Sevenfold, August Burns Red, fun., Casey Jones, Versailles, The Seatbelts, Galneryus, Born of Osiris, My Chemical Romance, Explosions In The Sky, Daft Punk, Basshunter, Talco, Dethklok, Chase Coy, Jason Derülo, ReinXeed, We Are The Union, Attack Attack!, White Noise, ItaloBrothers, Four Year Strong, Iyaz, The Summer Set, The Flaming Tsunamis.
Check out my music taste:
http://www.last.fm/user/XEverReadyX