Superior selection of games including several console-exclusive titles; all games in high-definition; easy-to-use Dashboard interface; excellent online gaming and communications via Xbox Live; plays hundreds of (but not all) original Xbox titles; doubles as a superior digital media hub and Windows Media Center extender; online Marketplace allows for easy purchases of downloadable full-scale games, minigames, movies, and TV shows; latest version offers HDMI output with 1080p support; reduced power supply footprint; new processor runs cooler and quieter. 

Now that Blu-ray has become the pre-eminent HD standard for discs, the Xbox 360 has yet to support it, but it still remains an excellent game console with a superior game library and online experience.