A really pretty distribution of linux

What is a really pretty distribution of linux?

Definitely Mandriva (formerly known as Mandrake); Mandriva DVD is full of software including different Desktop Environment, but you can only find open source software (closed source software can be installed later, anyway); on Mandriva One 2007 you can also find yet free but not open source stuff like official driver for nvidia and ati and firmware for some devices like adsl modems; with Mandriva (if your card is supported, so when you buy a new PC I suggest an nvidia based video card, since nvidia is better supported than ati) you can easily set 3D desktop features, transparencies, "springy" windows :) etc.
The same results can be achieved with every Linux, Mandriva is easier.