I was going to post something, but then the link I was going to use died, and I am still waiting for it to come back. Instead, here's the man some believe to be the greatest tenor ever.
Here he is, singing that other song that every other tenor sings.
By way of comparison, as I have done elsewhere on this blog, here is another great tenor- Mario Del Monaco aka The Brass Bull of Milan- singing Nessun Dorma in a completely different style, but also with power and feeling.
If you have a preference between these two, or have another singer you prefer, feel free to say so in the combox.