First and most importantly of all, here's where to buy your very own stuffed Linux penguin.
Nice site on why Linux is better. Just the benefits and features.
An article on Ubuntu.
A post on the true story of a $179 computer from Fry's; total cost of everything with additional hardware ended up $366. Things get a lot cheaper when you don't pay for the operating system.
And another post on that same ad in Fry's.