Quadratic Equation Solver (and more!)     
The Quadratic Equation Solver posted on this page solves for both real and imaginary (if applicable) results. Also on this site: solvers for the Cubic and Quartic equations, N Equations in N Unknowns, Eigenvalues and Eigenvectors, Cubic Spline Interpolation, Numerical Integration, and Least-Squares Data-Fitting.
http://www.akiti.ca/Quad2Deg.html   more info

Typography and a history of the Alphabet     
A history of the roman alphabet, with factoids on typographical curiosities and information on other alphabets. See all the letters of the major alphabets of the world, both ancient and modern.
http://www.alphabetandletter.com/   more info