• Physics Colloquium, Rutgers University (2008)
  
• Physics Colloquium, SUNY Stony Brook (2007)
  
• Physics Seminar, Cornell University (2006)
  
• Physics Colloquium, Columbia University (2006)
  
• Astrophysics Colloquium, MIT (2006)
  
• Astronomy Colloquium, NRAO, Soccorro, NM (2006)
  
• Physics Colloquium, Washington University, St. Louis (2006)
  
• Physics Seminar, University of Michican, Ann Arbor (2006)
• Physics Colloquium, Cornell University, Ithaca, NY (2006)
  
• Physics Colloquium, University of Michican, Ann Arbor, MI (2006)
  
• Astrophysics Colloquium, McGill University (2006)
  
• Astronomy Colloquium, University of Illinois at Urbana Champagne (2005)
  
• Astronomy Colloquium, Caltech (2005)
  
• Physics Colloquium, University of Connecticut, Storrs (2005)
  
• Astronomy Colloquium, Cornell University (2005)
  
• Physics Club Talk , Yale University (2004)
  
• ISCAP Seminar, Columbia University (2004)
  
• Astrophysics Colloquium, MIT (2004) 
• Astronomy Colloquium, University of Massachusetts at Amherst (2003)
  
• Astronomy Colloquium, University of Maryland (2003)
• Particle Astrophysics Seminar, Harvard University (2003) 
• Astrophysics Seminar, Rutgers University (2002)
  
• Particle Astrophysics Seminar, Case Western Reserve University (2002)
• Physics Colloquium, Syracuse University (2001)
• Physics Colloquium, University of Wisconsin at Milwaukee (2001)
• Physics Colloquium,  North Carolina State University, Raleigh (2001)
• Physics Seminar, Northwestern University (2001)
• Astronomy Colloquium, Columbia University (2001)
• Physics Seminar, California Institute of Technology (1999)
• Astrophysics Colloquium, University of California at Santa Barbara (1999)
• Gravity Group Seminar, Princeton University (1999)
• Cosmology Colloquium, Beijing National Observatory (1999)
• Gravity Group Seminar, Princeton University (1998)

Conference Talks and Presentations

• Invited Talk, "JASON Meeting" Washington, DC (2008)
• Invited Talk, "Marc Davis Fest" Berkeley, CA (2008)
• Invited Talk, "NASA Long-Wavelength Detector PI Workshop", Washington, DC (2007)
• Conference Colloquium, "The Astrophysics of Near-Term Cosmological Observations" Waterloo, Ontario, CA (2007)
• Conference Talk, "Fundamental Physics with the Cosmic Microwave Background" Irvine, CA (2006)
• Invited Talk, "NASA Long-Wavelength Detector  Array PI Workshop", Washington, DC (2005)
• Conference Talk, "Kavli Institute Inaugural Symposium in Honor of David Schramm", Chicago, IL (2005)
  
• Invited Talk, "NASA Long-Wavelength Detector  Array PI Workshop", Washington, DC (2004)
  
• Invited Panel Presentation "20th IAP Colloquium on CMB Physics and Observation", Paris, France (2004)
• Conference Talk, "20th IAP Colloquium on CMB Physics and Observation", Paris, France (2004)
• Invited Talk, "Beyond Einstein: From the Big Bang to Black Holes", SLAC, Stanford, CA (2004)
• Invited Talk, "A workshop on Studies of Dark Energy and Cosmology with X-ray Surveys", Greenbelt, Maryland (2004)
• Invited Talk, "Cosmology with the Sunyaev-Zel'dovich Effect", Kiyasoto, Japan (2003)
• Invited Talk, "New York State Section APS Meeting, Syracuse", New York (2002)
• Conference Talk, "Hubble Symposium", Baltimore, MD (2001)
• Invited Talk, 16^th International Conference on General Relativity and Gravitation, Durban, South Africa (2001)
• Conference talk, Hubble Symposium, Baltimore, MD (2000)
• Invited talk, IX Marcel Grossman Meeting, University of Rome, La Sapienza, Rome, Italy (2000)
• Conference talk, Energy Densities in the Universe, 35^th Rencontres de Moriond, Les Arcs, France (2000)
• Conference talk, 195^th AAS Meeting, Georgia State University, Atlanta, GA (2000)
• Conference Poster, Instruments and Cosmology: A Meeting to Celebrate Jim Gunn's birthday, Princeton University (1998)
• Conference Poster, 191^st AAS Meeting, Washington, D. C. (1998)

Summer Schools

• SCS Summer School on Galaxy Clusters, Princeton, NY (2006)
• Invited Review, "Santa Fe Cosmology Summer workshop", Santa Fe, NM (2005)