Do you want to try out Linux? You probably don’t know where to start. Here’s my advice: Try Ubuntu. The standard version comes with the GNOME environment, which I don’t like at all so I strongly recommend you use Kubuntu, which is Ubuntu but with the KDE desktop environment, a great, fast and user-friendly collection of high quality, open source applications for your daily needs or if you prefer and you have always preferred smaller applications, less eye-candy but not necessarily a absence of any beautiful pictures, in other words you prefer a lighter(and faster) desktop, I recommend to you Xubuntu, which runs the XFCE desktop environment, and looks very similar to GNOME (Ubuntu), only it is lighter and a whole lot faster ;).
Here’s something that would help you decide to try Linux :). Tell me if you don’t think it just rocks ;).