I think my favourite bits so far are this list of "facts" about garden gnomes (https://www.buttercookie.de/AI/garden_gnome_facts.html#garde...), the strange tale of the Werkstofflimousine (https://www.buttercookie.de/AI/the_burkiss_way.html#werkstof...) and The Chronicles of the Orbital Railroad (https://www.buttercookie.de/AI/orbital_railroad.html).
(There's also more stuff which I haven't had the time to edit properly hidden under https://www.buttercookie.de/temp/AI/)