blog posting at Wolfram|Alpha points out ways their website can help us. There's more than when I last blogged about it.
You can map family relations, like this one for the aunt of the sister's husband. It does have difficulty with more complex relationships like double cousins and step relatives. It also calculates a blood relationship fraction, not the same as the shared DNA which would be nice to have.
You can determine the day of the week for any date. Did you know the 12th of May 1945 was a Saturday (congratulations to those who share a birthday.) Also compute time difference between dates, and other calendar calculations.
Interpreting Ambiguous Words
Also helpful for recreational word puzzles.