In one of the CES 2007 press releases, Nielsen says that as of Q3-2006, more US households have DVD players vs VCRs (81.2% vs 79.2%). I love the decimal point accuracy of their survey :-)
http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/12-19-2006/0004493848&EDATE=

Internet suprasses DVD players at 95.4%, but DVD players surpass computers at 73.4%, internet access (68.5%) and cell phones (!) at 75.2% and annihilate mp3 players (26.7%) and PDAs (16.4%).