Preprints are available from xxx.lanl.gov under gr-qc,hep-th,physics.
The transparencies for a public lecture on Black Holes can be found under Black Hole Talk
The transparencies for a public lecture on "Finding Harmony in Discord: A Physicist's View of Symmetry and Beauty", given as part of the University of Winnipeg's Distinguished Faculty Lecture Series, can be found under Finding Harmony in Discord