Faculty with fields of expertise in pure mathematics

Elizabeth Arnold  Groebner Bases, Computer Algebra 
Elizabeth Brown  Set Theory 
David C. Carothers  Functional Analysis 
Carl G. Droms  Combinatorial Group Theory 
Jeannie W. Fitzgerald  Coding Theory, Algebraic Geometry 
J. Robert Hanson  Algebra 
John C. Klippert  Analysis 
Peter D. Kohn  Low Dimensional Topology, Knot Theory 
James H. Liu  Differential Equations 
Carter G. Lyons  Algebra 
John T. Marafino  Complex Analysis 
Jason Worth Martin  Algebraic Number Theory 
G. Edgar Parker  Differential Equations 
Gary L. Peterson  Algebra 
Jason Rosenhouse  Algebraic Graph Theory, Number Theory 
Laura Taalman  Singular Algebraic Geometry 
Leonard VanWyk  Geometric Group Theory 
For those considering graduate school, aside from taking as much mathematics as possible, you might want to apply to a Research Experiences for Undergraduates program or for the Budapest Semesters in Mathematics program.
Both the American Mathematical Society and the Mathematical Association of America have extensive web pages, as does the Math Archives. There are also quite a few mathematical links listed through the JMU Library. For general articles about academia, try the Chronicle of Higher Education.