Wolfram|Alpha has officially launched! I don’t know how to describe it but call it a ‘mathematical’ Google.
All searches return mathematics related answers.
e.g. “Sydney to Los Angeles” gives
a)Distance 12054 km Flight Time 13 hours 54 minutes
e.g. “Lee” gives the surname breakdown in USA against ethnicities, ranking its popularity etc.
e.g. “x^3-x^2+5=0” gives a plot and a solution!
Its cute, but it may not be the most useful…fun nevertheless, have a try!