Research:

My area of research is geometric group theory, although I have recently been straying into algebraic combinatorics.  Specifically I work on braid groups and Artin groups, non-crossing partition lattices and associahedra.
 
 

Papers:

Some papers on the ArXiv:

Lattices in finite real reflection groups (with Colum Watt)
Shellability of noncrossing partition lattices (with Christos Athatasiadis and Colum Watt)
h-vectors of generalized associahedra and non-crossing partitions (with Christos Athatasiadis, Jon McCammond and Colum Watt)
 

Links:

Jon McCammond's geometric group theory pages.
Mladen Bestvina's problem list.