People

Acklam, Peter J.
Author of the PNM Toolbox and other utilities.
http://home.online.no/~pjacklam/matlab/

Benamou, Jean-David
Author of GROLAB, a MATLAB GUI for easy interactive Ray Tracing in 2-D.
http://www-rocq.inria.fr/~benamou/

Drasco, Steve
MATLAB applied to human powered vehicles, radon, hamiltonian integrators, string theory, and gravity waves.
http://baba.astro.cornell.edu/research/matlab.html

Higham, Nick
Manchester Centre for Computational Mathematics. Research Interests: Numerical linear algebra; Numerical analysis; Scientific computation. Author, with Desmond J. Higham, of MATLAB Guide (SIAM, August 2000).
http://www.ma.man.ac.uk/~higham/

MATLAB Tools
Various MATLAB Tools for Automotive and signal processing use.
http://www.gambelli.org/Matlab/

Polking, John C.
Author of "Ordinary Differential Equations using MATLAB". His page also has a small collection of useful educational programs available for download.
http://math.rice.edu/~polking/