- Professor of English, Cornell University, 1992-2001
- Visiting Professor, Free University, Berlin, 1998 (Literature and Cultural Studies, Kennedy Institute of North American Studies)
- Visiting Professor, Stanford University, Humanities Interdisciplinary Program, Winter 1999
- Distinguished Chair in American Studies, Institut für Sozialwissenschaften, Humboldt-University, Berlin 2000-01
- Evan Frankel Professor of Literature, University of California at Los Angeles, 2001-present