In addition to the popular-level astronomy talks I've started doing as part of MICA, there will also be regular "journal clubs." This is something you'll see in physics and astronomy departments sometimes: people take an interesting paper from the recent literature (really, from preprints nowadays), and lead a discussion about it with their colleagues. It's one way of trying to keep up with some of what's going on in the literature, and it's also a way that one scientist can share his particular area of interest with his immediate colleagues.
This Friday, George Djorgovski will be leading a journal club in Second Life at 8AM SLT (pactific time) on the paper Dark Energy from Vacuum Fluctuations by Djorgovski and Gurzadyan. Note that while in this case, the author of the paper is talking about his own paper, that's not always the case. In journal clubs I've been too, sometimes people talk about their own work, and sometimes they talk about other interesting papers from the literature. For instance, when I was at Vanderbilt and still working with the Supernova Cosmology Project (which used optical and infrared astronomical data), I gave a journal club about the WMAP 3-year results -- very releavant to cosmology and my work, but not something in which I was involved.
The journal club will be where all of the MICA meetings currently happen, at the ISM Workshop in Spaceport Bravo.