Each Distribution has it's own logo / mascot, but Tux seems to be the default international cross-distribution Penguin mascot for Linux fans everywhere.
A Google image search for 'Linux Tux' gives more than 210,00 results, and shows the smiling (smirking?) Penguin in a many many guises.
Joseph Hall created a very impressive 3d rendition of Tux as a cake, and gives detailed step by step instructions for you to make your own. (All ten steps! From Step 1 - baking the base, to Step 10 - storage and transportation.)
He's almost too cute to cut into isn't he?
See you Friday !