SFBAAPS is a very informal organization. We don't have a set meeting schedule, but rather members will volunteer to hold an open house. We try to do this monthly, as a way for the members to show off their tanks, but more to just socialize and put faces to names. In the months that no one volunteers we try to meet at some public place. We've had meets a Temescal Cafe in Oakland as well as a Roundtable Pizza in San Jose.
The end of each meet is a plant swap session where members bring their clippings fpr exchange with the group. On most occasions we'll end up with several pounds of plants leftover that are either taken to a LFS, or unfortunately, disposed of.
If by cool speakers you mean that there are some very experienced members that are worth listening to, then yes. Even the fabled Tom Barr is a member who makes the trek in from Sacramento on occasion.