I like the brand spanking new Ubuntu 10.04 a lot. But while I like its GNOME 2.30 interface, I also like other interfaces such as KDE. It would be nice if Ubuntu could also play MP3s, common video formats and Flash from the get-go. You could install all these and other extras from the Ubuntu repositories, but there's also a wide-variety of Ubuntu spin-offs that come ready to give you the functionality you want right out of the box.