Video games as art?

I'm sure most of you know my opinion of the subject, but you may not be aware of the rather interesting debate going on between the esteemed reviewer Roger Ebert (someone who I generally admire, as a movie reviewer, and as someone who has supported the idea that anime can be art) and the gaming community on this issue. Author Clive Barker has even stepped into the debate. Anyway, one of the columnists on Kotaku has posted a rebuttal to Ebert's most recent column on the subject; a rebuttal which I thought admirable tackled Ebert's points (more so than Barker's rebuttal of Ebert's original statement on the subject, in my opinion).