I've got to disagree with my friend SouthPaw here. While I also detest video games and the wasted hours spent on them (and I am the father of a 16 yo vidiot), I believe that guitar hero in particular has increased CD sales and has likely increased interest in kids wanting to play a real guitar (like my son does).
An excerpt from a USA Today article:
A look at Nielsen SoundScan data for a dozen Guitar Hero II songs found that 11 out of 12 had increased sales in 2007, including:
• Cheap Trick's Surrender nearly tripled from 58,000 digital sales in 2006 to 161,000 in 2007.
• Kiss' Strutter went from 11,000 to 63,000 sold.
• The Pretenders' Tattooed Love Boys rose from 5,000 to 16,000.
• Only Danzig's Mother showed a drop, from 28,000 to 16,000.
"A lot of it is the classic guitar-type rock stuff form the Skynyrds to the new big monster bands like Queens of the Stone Age and Wolfmother," says Mike Davis of Universal Music (Bon Jovi, Lynyrd Skynyrd, The Who). "Old and new with the classic rock sound seems to be the stuff that is doing super well. … It's a pretty hot subject these days."
And look at these stats of actual guitar sales:
2006 2,991,260 -9.6% $1,151,290,000 -4.1% $372
2005 3,302,670 0.2% $1,158,592,050 13.3% $350
2004 3,302,670 41.0% $1,022,861,000 13.3% $309
2003 2,341,551 20.5% $903,261,000 -1.9% $386
2002 1,942,625 11.4% $921,057,000 -.13% $529
2001 1,742,498 5.6% $922,280,000 -0.1% $529
A pretty impressive increase in '04 and '05 when guitar hero first came out. It's just numbers, with millions being introduced to music by guitar hero, even if only a small percentage pick up a real guitar, it leads to an increase.
More importantly for me, my son started to appreciate "good" music from these games (or maybe it just became cool to like Dad's music), before that he was really getting into the hip hop rap crap that I couldn't stand!!
Rule No. 1 - If it sounds good - it is good!