It is very funny, but just in case there is anyone out there like me..
Having only ever seen the word written and in the context of Linux that is capitalised, I always supposed it was pronounced g.n.u. or at worst nu, and thought the wildebeest was a logo of no relation - like Linux and the penguin.
It was only later in life I found out that gnu was pronounced gah-noo and was in fact another name for wildebeests.