We started Tuesday nighters in Lyons about 5 years ago. They're going pretty strong now. Even when it's sub 30 with snow on the ground, we can still rally 5 or 6 other guys into riding. We went to a local Moto playground last night. It's really step and generally not a ton of fun, but there is one smoking singletrack descent there that is top notch.
I put this on the Redstone blog, which some of you check, but Lampin has been slow lately, so enjoy!