Eddie Vedder in "Blood".
And +1 to John Lennon's 2/11/1964 studio version of "Twist and Shout". And Geddy.
Favorite scream in rock?
Robert Palmer lets rip a tremendous, rolling scream near the end of "Sneakin' Sally." "The fact is ... rrrooOOAAAHHHHH .... JUST BEEN CAUGHT."
What's your favorite scream, shout, or yell? Other than Roger Daltrey's, of course.