The BMWCCA has social events almost every week on Thursday evenings. The NoVa social is today, Columbia is next week, and Rockville is the week after that. Lots of cool cars, lots of good people. Plus, $10 of your food is paid for by the CCA. Here is the site and at the bottom is a calendar of events:
http://www.nccbmwcca.org/content.php
If you're not a member, let me know and I'll get you the link to sign up. It's $45 a year but go to a few of these socials and it pays for itself.