FRIDAY: >> Nothing wrong with another strong all-local lineup: Washington Social Club, These United States and Let’s French will be on Black Cat’s mainstage. DCist has interviewed two of these bands before, and we’re set to get up close and personal with the third. So check ’em out. 9:30 p.m., $10. >> We’re definitely impressed with the speed at which DC Rollergirls have gotten their act together since hosting a series of recruitment happy hour/arm…

(By DCist contributor Kanishka Gangopadhyay) The National Blocktoberfest takes place this Saturday in the “Ballston Entertainment Zone” next to Ballston Common Mall on Wilson Boulevard in Arlington. Billed as “Fall’s biggest street festival,” the event will encompass five city blocks and features 20 local bands, including staples The Kelly Bell Band and Dewey Beach favorites Love Seed Mama Jump. Blocktoberfest will also feature numerous vendors selling Bavarian food and beer, an Oompah band, face painting,…