All Linuxes are good, but I confess I am developing a special fondness for Ubuntu. It still has some rough edges, but the Ubuntu team is doing some very nice things, and it has already inspired a number of other projects, like Kubuntu and Edubuntu. There are a number of non-English derivatives, like Guadalinux (Spanish), Ufficio Zero (Italian version designed for office users), and Finnish and Taiwanese editions. The Accessible Live CD tries to assist vision and hearing-impaired users, and there is even Ubuntu for HP Laptops.
Pretty amazing stuff. You sure don’t see this kind of creativity and usefulness in the straitjacketed proprietary world.