Nielsen has issued a year-end look at the most popular trends among Americans during 2008, covering everything from the top TV programs to the most popular consumer packaged goods.
Up first: movies and DVDs. 
Action and adventure ruled the box office in 2008.  “The Dark Knight,” “Iron Man,” “Indiana Jones and the Kingdom of the Crystal Skull” were the top three box office earners this past year, taking in a combined $1.16 billion through December 7.
Among DVD releases, action and adventure flicks also fared well, with “Iron Man” and “I Am Legend” …

Microsoft’s Xbox is the most buzzed about game console so far this holiday season, Nielsen Online reported Thursday.
The Xbox 360 garnered the largest share of online buzz between November 1 and December 9, with 41.6% of blog messages mentioning Xbox, Wii or Playstation.
In comparison, Nintendo’s Wii was mentioned in 29.8% of game console blog messages, while Sony’s Playstation ranked third with mentions in 28.6% of gaming-related blog posts.

Nielsen is forecasting sales of more than $98 billion for the November-December 2008 holiday retail season.  But amid worsening economic conditions, U.S. consumers are likely to be more cautious than ever with their spending. 
A recent Nielsen survey of 21,000 U.S. households found that 35% plan to spend less this year than they did in 2007.  Just 6% will spend more this year, while 50% say they’ll maintain the same level of spending from 2007.
Lower-income households reported large reductions in their holiday spending — but so did high income households.  In all, 37% …