Every quarter we have a poll predicting which will be the quarter's most valuable QG paper, most important for future non-string quantum gravity research. In this case, I'm collecting nominees for the time period April thru June 2008, This simple elegant 6-page paper by members of Loll's group just came out and definitely goes on the list. http://arxiv.org/abs/0806.0397 The Self-Organized de Sitter Universe J. Ambjorn, J. Jurkiewicz, R. Loll 7 pp, 1 figure, entry to 2008 GRF essay competition, honourable mention (Submitted on 2 Jun 2008) "We propose a theory of quantum gravity which formulates the quantum theory as a nonperturbative path integral, where each spacetime history appears with a weight given by the exponentiated Einstein-Hilbert action of the corresponding causal geometry. The path integral is diffeomorphism-invariant (only geometries appear) and background-independent. The theory can be investigated by computer simulations, which show that a de Sitter universe emerges on large scales. This emergence is of an entropic, self-organizing nature, with the weight of the Einstein-Hilbert action playing a minor role. Also the quantum fluctuations around this de Sitter universe can be studied quantitatively and remain small until one gets close to the Planck scale. The structures found to describe Planck-scale gravity are reminiscent of certain aspects of condensed-matter systems." This is the first time that a whole smooth spacetime continuum (not put in by hand at the beginning) has emerged as the weighted average in a kind of Feynman path integral. (combining much variety of irregular spacetimes, whose unsmoothness cancels out in the average.) It is obviously a landmark achievement. But it comes at a time when OTHER significant results have also just appeared in other non-string QG research lines. Loop Quantum Cosmology, for instance. To place it in context, I will fetch the four or five others constituing the MVP (most valuable paper) nominee list so far---we still have some three weeks to go before nominations are closed. If you have some suggestions, or comments on any of the papers, please contribute them to this thread.