Just when we thought we'd seen the last of the Coloradoans on this season of American Idol comes this: Somehow, wrapped up with all the South By Southwest-related hubbub last week, we managed to miss 3OH!3 performing "Blah Blah Blah" on Idol with Ke$ha. The props were mildly amusing (score one for the gents with giant TVs on their heads), overall, the appearance was pretty weak (subtract one for the inexplicable headdress). Don't know if the performance was lip synced (doesn't sound like it), but either way, the 3OH!3 verse sounded flat. Have a look. See what you think.