Vizio showed up in style at CES 2009, and we’re not just talking about the HDTVs it brought along. The company’s balance sheet is looking about as healthy as any outfit’s could possibly look these days, with it using momentum from the third quarter of last year to propel it right past Sony in Q4. No need to check your set — we really just said that Vizio passed Sony for the number two spot in US flat-panel TV sales. According to its Q4 numbers — which were absolutely amazing, by the way — the low-cost HDTV