An extensive Half-Life fansite featuring all the latest media, news, info, a sleek D3P varianted but none-too-complex designed to navigate interface, and some nice discussion forums.
The definitive source for Half-Life 2.
Up to the minute coverage of the world's most anticipated game.
VALVe Software's Official Half-Life 2: Episode One Expansion Pack website, news, all kinds of info (such as the story), media (videos and screenshots), and so forth.