I don't think Saturdays count as organized. They're probably about as dis-organized and drunken as a ride can get and not be simply a pub crawl. Or a fire pit. Or whatever happens to happen that night
The riders here just seem to be a pretty disorganized lot. There was talk from the people that showed up hearing about last Friday's alleycat (all from here, no couriers since they all knew it wasn't happening anymore) of putting on a race without courier input. Anyone still want to do that? I can supply printing at least.
There are also a lot of spandex rides, but I get the feeling that's not what you're looking for. There's the Grumpy's Girl Ride coming up, but if you're a guy you have to wear a floral skirt... Or get derbied down by a bunch of girls...
June 17th the Black Labels are leaving Hard Times and heading to Stillwater for a weekend of drunken fun in Stillwater on mutant bikes...
Saturday ride can be a good way to start meeting people though. Dinkytown McDonalds 9-9:30pm, pretty much year round. Drunk fast long slow short bars fires frozen lakes - whatever seems right for the night.
I haven't actually been out for one in about a month, and I'm probably skipping the next one, too.
Hope that helps.