I can hardly wait!

On the much anticipated trial of Scooter Libby, Tom Maguire puts it as only Tom Maguire can:

Here is yet another reason to look forward to a trial - the defense tells us yet again that they may call Joe Wilson:

Further, because the defense may call Mr. Wilson as a hostile witness, we need to prepare to examine him, if necessary, on the details of the trip, including his wife’s role in selecting him for the assignment and the findings he reported to the CIA, and later, to the press.

I'm not a lawyer, so help me out - is there a category of witness beyond "hostile"?  "Incandescent", maybe?

It's a long and very informative post.  Be sure to read the comments.