Do any well-known CAs issue Elliptic Curve certificates?

They are issued now by Comodo as part of their PositiveSSL offering. I can't say they're advertising it too well, but living proof by math exists:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

I wanted to dig a little deeper into this, so I contacted the folks at Comodo who are responsible for their ECC CA. After a bit of back and forth, they told me that Comodo have been advised that they need a license from Certicom/RIM before they can issue ECC certs, and that they are currently in licensing discussions with them. They didn't give an ETA for having those discussions finalized, so who knows when you can actually buy a cert.