Linux Mint 9.3 is here.
This is the best alternative of Windows or Mac OS.
Linux Mint is an Ubuntu-based distribution whose goal is to provide a classic desktop experience with many convenient, custom tools and optional out-of-the-box multimedia support. It also adds a custom desktop and menus, several unique configuration tools, and a web-based package installation interface. Linux Mint is compatible with Ubuntu software repositories.
Like always it comes with 3 versions – Fancy new CINNAMON, Classic and stable MATE, super lite and minimal XFCE.