MEPIS
MEPIS Linux is a desktop Linux system that is also easy to configure as a dedicated server. It is designed for both personal and business purposes. It includes cutting-edge features such as a live/installation/recovery CD, automatic hardware configuration, NTFS partition resizing, ACPI power management, WiFi support, anti-aliased TrueType fonts, a personal firewall, KDE, and much more.
Visit MEPIS at: http://www.mepis.org/ Failed these criterias:
Does not have one-click installable applications
This doesn't make sense to me. If you click on a .deb file, Mepis automatically opens up Kpackage, to which it lets you choose whether you want to install it or test it (simulate install). So maybe that's two clicks. So what? Is it that big a deal to those guys?