Here you find the latest version of Undead Assault II. Make sure to delete all the other, non-original and bugged versions of the latest beta 7.
http://www.undeadassault.net
http://www.undeadassault.net/download/Undead%20Assault%20II%201.5b%20beta%207%20OW.w3x
Here a link to the great world of Notd: aftermath. Both the homepage and the forums are worth a look. Go to the download section on the main page for the latest map, which is notd: aftermath 1.5c.
http://www.notd-aftermath.com
Get the latest Notd: Aftermath 1.5d beta 2 here:
http://www.mediafire.com/download.php?0imnidt2yyi
This one is a direct link to the download section of the Dotd S.T.A.R.S. forum. You can download the brandnew Dotd 6.0 or the old Dotd (latest version is 5.3 beta4):
http://dotd-stars.darkbb.com/wciii-dawn-of-the-dead-53-60-f6/download-centre-t505.htm
For Dotd 6.beta4:
http://www.dotd-stars.com/dotd-6-download-updates-f8/download-dawn-of-the-dead-6x-versions-t644.htm
This leads you to the homepage of SWAT and a direct link to the map download:
http://www.redscull.com/swat/
You get the latest version of DotA at:
http://www.getdota.com
Last but not least some links if you want to find any wc3 maps:
http://www.epicwar.com/maps/
http://warcraft3.filefront.com/
And of course, Blizzard Entertainment...
http://www.blizzard.com