Windows/Mac/Linux/Etc: XBMC has just released the first beta of XBMC 9.04 (codename Babylon), packed with several impressive new features and fixes.
New-to-this-release features include support for more filetypes, some crazy Karaoke features, improvements to the skinning framework, better music and movie scraping tools for artwork, and support for PowerPC Macs. The release is available on Windows, Mac, Linux (shortly), AppleTV, and original Xbox. It's a hefty download, so get started! While you're enjoying your new XBMC install, check out these five awesome themes for customising XBMC.