Linguistics Unlimited
Apart from the `Mythbusters' page mentioned above, there is
material here on Autolexical grammar, creoles, and Khymer.
#10#11#12
Fun and games from the yourdictionary.com site
Riddles, word games, the Chomskybot, lists of words that mean the opposite of
themselves (e.g. cleave: to cut apart or adhere tightly),
and lots of other stuff