All Weekend Long:
- Otakon, Baltimore Convention Center, check website for details
- Ocean City Greek Festival, Robert E. Powell Convention Center, check website for details
- Tinkertoy Exhibit, Port Discovery, check website for details
- Outlaw Jam 2: featuring Motley Crue, Poison, KIX and Brian Setzer, Frederick Fairgrounds, check website for details
- The Black Lips, Ottobar, 9 p.m.
- Stilt Walking Class, Nanaprojects, 5 to 9 p.m.
- Columbia Lakefront Film Festival: Flipped, Columbia Town Center Lakefront, 8:30 p.m.
- 311 and Sublime, Jiffy Lube Live, 9 p.m.
- Eureka Birds, Wind-Up Space, 8 p.m.
- Dolly Parton, Wolf Trap, 8 p.m.