Watch Jimmy Wales's face as he's introduced in a segment for this morning's episode of Squawk Box on CNBC. Wales has long claimed to be Wikipedia's sole founder — a fact disputed by Larry Sanger, Wikipedia's cofounder. As CNBC's Joe Kernen matter-of-factly describes Wales as the site's cofounder, Wales furrows his brows, starts to open his mouth, darts his eyes back and forth, and then swallows his pride. You can just see him writing a blog post about it in his head.

Who founded Wikipedia? Jimmy Wales likes to tell third-world denizens he did. Here's a clip from IJsbrand van Veelen's new documentary The Truth According To Wikipedia featuring Wikipedia cofounder Larry Sanger. Among Wikipedians, it's an old debate, but to Wales's worldwide audience, Sanger's existence might come as a surprise.