Mikhail A. Shubin Partial differential equations and geometric analysis Chuu Lian Terng Geometry and topology of submanifolds,integrable Hamiltonian systems. Site also has a link to R. Palais' program 3-D filmstrip. Andrei Zelevinsky Representation theory, algebraic geometry, algebraic and polyhedral combinatorics, hypergeometric functions Christopher King Mathematical physics and computer networks Donald King 1.Nilpotents in semisimple Lie algebras, unitary representations of reductive groups 2.Weyl groups, 3.Primitive ideals in enveloping algebras. David Massey Topology and geometry of complex analytic singularities. His site has a singularity subsite with explanations and movies.
Site has many links.