Having seen other search engines do something similar these are by no means unique. Nevertheless here they are:
Care to suggest/find more?
"how about global thermonuclear war?" comes up trumps
What is the Matrix!?
It gets a bit confused when you ask "Who ate all the pies?", giving you a distance measured in pies o_O
Edit: You can ask it for all kinds of measurements to be converted to pies! Apparently, there are 3.6 pies to the metre...
Google "wolfram alpha easter eggs" will turn up the known responses. From the results of the image search:
Edit: I don't like this one:
"Answer to the Ultimate Question of Life the Universe, and Everything"
How much wood could a woodchuck chuck if a woodchuck could chuck wood?
"Where do babies come from?" is also a good one.
haha it wouldn't tell me:D
Somethings are still unknown..
r = 2sin4θ - Wolfram|Alpha
It's quite a nice computational engine! I asked if I'm hot!!