Matt Strassler's post prodded me to look back and notice something: we really have had quite an amazing collection of guest bloggers over the years. There is a page on the site dedicated to keeping track (as well as a category), but nobody every clicks there, so I thought I would just reproduce the list here. We have a few more in the pipeline, keep your eyes peeled!
Lawrence Krauss on string-theory skepticism
Paul Kwiat on quantum computation
Anthony Aguirre on the Foundational Questions Institute
Chanda Prescod-Weinstein on the community of scientists
Joe Polchinski (the string debates; science or sociology)
Heather Ray on MiniBoone
Michelangelo D'Agostino on particle physics fieldwork in antarctica
Juan Collar on dark matter detection
Tom Levenson (Isaac Newton as the first cosmologist; Iraq War suicides and the material basis of consciousnessEinstein, religion, and Jewishness)
Joel Corbo on graduate school and teaching
David E. Kaplan, the LHC on the History Channel
George Djorgovski, A New World Overture (science and virtual worlds)
Michael Peskin on John Updike
Kip Thorne on Stephen Hawking
Marcelo Gleiser on filtering and empirical knowledge
Matt Johnson on making extra dimensions disappear
Evalyn Gates on gravitational lensing
Malcolm MacIver on intelligent robot warriors
Caleb Scharf on the Shadow Biosphere
Eugene Lim on education in Haiti, and a followup on calculus in Haiti
Matt Johnson on observing the multiverse
Neal Weiner on the coming era of dark-matter detection
Jim Kakalios on the quantum mechanics of Source Code
Lisa Randall on writing Knocking on Heaven's Door
The Great Quantum Cosmology/Eternal Inflation Debate: Tom Banks on eternal inflation; Don Page on quantum cosmology
The Great Quantum Mechanics Debate: Tom Banks on quantum probabilities, David Wallace on the physicality of the quantum state
Matt Strassler on the hunt for the Higgs boson
