Google Solve feature can solve full-blooded linear programming problems right in your spreadsheet. This is much more sophisticated than the Excel Solve feature which can only change one cell to optimize the output variable.

Quoted: Google Spreadsheets have their roots in the technology of 2Web Technologies, who developed an application called XL2Web. In June of last year, an

Quoted: Library of functions pulls information from Web sources. All the data you pull in can serve as input to other formulas, which opens up interesting analysis possibilities. Read this blog post by Rafe Needleman on Webware.

Quoted: Warning - this article may be dangerously confusing to non-programmers

Google Spreadsheet has a "GoogleLookup" function that can answer a wide variety of numerical answers - and the data can be place in your spreadsheet directly.

Companies, States, Countries, etc.

Dan Bricklin, the inventor of the spreadsheet (VisiCalc) - is interviewed on NerdTV.