Apparently 'docuseries' is a word now.

#001 | Dont Interrupt Me | Sat 8 Jan 2011 @ 7:38:17 PM (UTC)

Does that make 'docu-' a legitimate prefix?
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Shake your windows and rattle your walls.

#002 | HeyDude | Sun 9 Jan 2011 @ 1:35:43 PM (UTC)

IMO yes. I've also heard of docu-drama.

And Count Docula? No, too soon.