You could find the top Alternative songs for the year 2000 by going to the Billboard top songs website. Normally Billboard has a large database with historic information.
Countdown to Looking Glass - 1984 TV was released on: USA: 14 October 1984
Countdown to Pavlik-Hopkins - 2008 TV was released on: USA: 11 October 2008
The Missiles of October - 1974 TV was released on: USA: 18 December 1974
The O-C- - 2003 The Countdown 1-14 was released on: USA: 17 December 2003 Japan: 21 October 2006
Comfort and Joy - 2003 TV was released on: USA: 1 December 2003 Argentina: 7 December 2004 (video premiere) Japan: 24 December 2005 Hungary: 19 October 2007 Belgium: 28 October 2012
Evolution's Child - 1999 TV was released on: USA: 22 October 1999 Australia: 23 October 2001 Japan: 8 December 2001 Italy: 25 October 2005
Countdown - 2006 was released on: USA: 26 October 2006
Countdown was first released on the 4th October 2011.
Ike Countdown to D-Day - 2004 TV was released on: USA: 31 May 2004 Hungary: 21 December 2004 (DVD premiere) Netherlands: 18 January 2005 Sweden: 16 February 2005 (DVD premiere) Finland: 18 February 2005 (DVD premiere) Japan: 23 February 2005 (video premiere) UK: 6 June 2005 (DVD premiere) UK: 25 October 2008 Italy: 10 November 2008 Finland: 19 January 2010
Gift of the Magi - 2010 TV was released on: USA: 16 December 2010 France: 22 December 2011 Italy: 23 December 2011 Germany: 15 October 2012 (DVD premiere) Philippines: 6 December 2012 Belgium: 26 December 2012
Scared Shrekless - 2010 TV was released on: USA: 28 October 2010 Denmark: 30 October 2010 Hungary: 1 November 2010 Portugal: 30 November 2010 Australia: 24 December 2010 Poland: 26 December 2010
Specials for United Artists December 7th - The Day of Infamy - 1963 TV was released on: USA: 10 October 1963