Who do you think is the best singer, living/dead?

Personally I have to go with Freddie Mercury for the "dead" category (that phrase seems heartless, oh well) and Serj Tankian as the best living singer. It's not that Serj has a huge range, but I like his accent and the weird variances when he sings for different purposes- compare some of his System of a Down work with his Buckethead collaborations. Freaky.