Two bits of recent (and good!) news for Warcraft III players :
First, Blizzard has released a Warcraft III patch v1.21b which allows you to run the installed game without the Warcraft CD.
Secondly, possibly the most popular game using the Warcraft III engine, DoTA AllStars (my friends haven’t played regular Warcraft III LAN games since we discovered since discovering DoTA Allstars) has a new AI version (i.e so you can play with/against bots) : 6.48b AI+ v1.52 (login required).