Powerpack is a DVD edition which includes support, services, and important third-party proprietary software like LinDVD, Cedega, the Fluendo multimedia codecs, Flash Player, Scilab and 03 Spaces. It is available from the Mandriva Store.
Mandriva Linux has similar goals to Ubuntu in that it attempts to be an “ease-of-use” distro. It has been around for quite a while, being formerly known as Mandrake, and was the defacto distro to point to for newcomers for a long time. Ubuntu stole that spotlight from them for various reasons, though obviously they are still full steam ahead in development.