I'll add one more from that evening.
Note that these shots aren't particularly impressive from an artistic point of view.
Again, ISO 100, f 1.8, 1/15s, -1,7 ev.
I really like that large aperture in combination with the EP-2 IS. Without it, I would have needed 1/40s to get a shot without motion blur.
Regarding the f1.8 question: I was using P-automatic to see how smart the camera would handle this low light situation. It seems the camera itself is able to adjust the aperture in finer steps than the user could.