Links to Examples in Differential Geometry

http://mathworld.wolfram.com/topics/DifferentialGeometry.html (With a general listing of topics.)

1)  http://en.wikipedia.org/wiki/Paraboloid  (Calculates Guassian and Mean Curvature for quadratic surfaces.)

2) http://mathworld.wolfram.com/Paraboloid.html

3) http://mathworld.wolfram.com/Ellipsoid.html

4) http://mathworld.wolfram.com/Sphere.html

5) http://mathworld.wolfram.com/Torus.html

6) http://mathworld.wolfram.com/Curvature.html

7) http://mathworld.wolfram.com/RiemannTensor.html

8) http://mathworld.wolfram.com/FundamentalForms.html