Can I run a full screen application without a desktop?

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http://www.linuxquestions.org – I'm using a Raspberry Pi on a tiny 320x240 screen. I want to run a fullscreen app I am making using Python w/ pygame that will display graphs and other information about computers on my network. It should start on boot. However, I don't want Gnome, KDE, FluxBox, xfce, etc. That's all overhead and unnecessary for me. I will never use a UI. Is this possible? If so, how? (HowTos)