You can watch the interview on
http://www.interviewsrus.com/home/. If you are not already registered, it's an easy process and you can download interviews for free. There's a picture of Kristin from that interview on the home page now, accessible through the TV interviews category (relates to promoting a TV show--in this case, The West Wing).
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I watched the interview after reading most of these comments, expecting the worst. I was pleasantly surprised and enjoyed watching it. Kristin is definitely an upbeat person but didn't come across as phony to me, as she appeared to others that have posted here. Ellen seemed to be friendly enough, not negative toward her. Perhaps Ellen's perceived lack of enthusiasm could be the result of her just recovering from an illness, or still fighting it (a cold virus, like so many of us have had to deal with recently) or something else going on in her life. It didn't seem to have anything to do with Kristin.
I had never heard Kristin sing, but now I want to, after hearing her hit some of those high notes while giving Ellen an opera lesson. Her singing voice is amazingly good and so contrary to what you might expect from listening to her speaking voice.