Speaking of Beem, that 5 wood into the par 5 12th (?) at Hazeltine was pretty sweet.
Along the lines of Phil's earlier post, I think the Greatest Shot Ever must have some historical significance. For that reason, I wouldn't include Beem's shot, nor Micheel's, etc. I'd probably make an exception for Bob Huntley's four shots, though.
Still say it's Sarazen's.