Roger Daltrey- doesn't matter if he can hit the note or not; he's gonna damn sure try!
Richard Patrick- just a great rock vocal; makes the supergroup Army Of Anyone awesome.
Patrick Manohan (sp?) - before Train turned into s dreck band. First album was great.
Gordon Downie (RIP) - Hit or miss, and his style was unique to be sure, but it worked for me as long as he wasn't doing any "yelling" songs.
Apparently I like rock singers. I need tension in my music; I am not moved at all by clean precision and perfectly centered notes.