Stuff I've done/do:
Tech Crawl East - the largest startup showcase on the East coast:
http://www.techcrawleast.com
Baltimore Startup Weekend - build a company in 54 hours:
http://www.baltimore.startupweekend.org
Cowork Charles - free coworking meetups at cafes with wifi along Charles Street:
http://www.twitter.com/CoworkCharles
Baltimore Business Book Club - like business school without the tuition:
http://www.meetup.com/Baltimore-Business-Book-Club/
Innovate Baltimore creative technology networking events:
http://www.innovatebaltimore.com
Vegan Drinks - happy hour and networking for vegans/vegetarians:
http://www.bmorevegan.com
Feel free to get in touch with me if you want any info or think you'd like to be a part of any of the above!