It happened quick but was a weird moment of recognition in an unexpected place.
edit: just found this... http://ameblo.jp/angel-rinrin/entry-10409047933.html
which seems to mention her talking in the commercial but in the version I saw it was just a flash of her face with no dialogue and her blog entry was old so maybe they recycled footage?
edit 7-6-11: Saw the commercial again with the full dialogue tonight. Seems I was right about them recycling the footage from 2009 commercial. It's segments of people around the world eating it and speaking with subtitles.It shows her with the guy sitting at a table in their home (like the snapshot in the blog at the above link). They speak in Japanese and the subtitles claim he says "crazy american burrito" and then she says "what a monster!".