Google's calculator

In Hidden features of Google (a question on the first Stack Exchange 2.0 site, Web Applications) there is a great introduction to the calculator that is built into Google search.

For exammple it can do log(), exp(), sin(), dimensional analysis and imaginary numbers (symbol "i")!

Wikipedia featured lists

There is a very long page on Wikipedia with featured lists.

The linked to lists are described as:

The featured lists are what we believe to be the best lists in Wikipedia. Before being listed here, lists are reviewed at Wikipedia:Featured list candidates for usefulness, completeness, accuracy, neutrality, style and prose according to our featured list criteria.

A sample: Sites of Special Scientific Interest, West Midlands , Elements by stability of isotopes, Space telescopes, Solar eclipses in the 21st century, Scientific publications by Albert Einstein, and Amateur radio frequency bands in India.

However the list is dominated by sports...