Cobb Young Professionals presented by Cobb Chamber of Commerce for young professionals in their 20s and 30s.  5:30-7:30pm.  General admission:  $20 online (by noon, February 22) or $20 at door.  Members:  Free online (by noon, February 22) or $20 at door.  Dave & Busters, 2215 D and B Drive, Marietta.  More info:  770-980-2000 or www.cobbchamber.org.