Bill Gates says that ultimately, cellphones will kill the iPod as they invade its music-playing market. It's possible, but three big things have to happen first.

The thing that Dungeons & Dragons 3.0/3.5 excels at most is its flexibility: its possible to play the same class for years and never play the same kind of character twice. Unearthed Arcana expands that flexibility by adding hundreds of new options to the game.