Congress asks Breyer and Thomas about it.
Should they have them? Good question. I don't tend to like the idea of live arguments, and as evidence, I submit the chaos of the O.J. trial. At least those who view the Court in the flesh are either (a) lawyers admitted to the Supreme Court Bar or (b) tourists wanting to see the justices and staying in the two-minute rotation line. They aren't pundits who are ready to jump on any two-second soundbite that can be taken out of context. Maybe that's just my cynicism against pundits.
Either way, Clarence Thomas shouldn't really care.