Eddie Vedder is doubtless one of the most influential singers of the past twenty years. The problem, through no fault of his own, is that most of the bands he influenced are quite terrible. I still remember the first time I heard Creed on the radio. My first thought was, "This is the worst Pearl Jam song I've ever heard." I was greatly relieved when I learned it was some other band. Influence aside, Eddie Vedder's growl works perfectly in Pearl Jam. Just don't try and imitate it. Also, good luck deciphering the lyrics to "Yellow Ledbetter" and "Lukin." They're written in a language only Eddie can decipher.