A self-described musical about how we are all pieced together, The Theory of Relativity questions what you might have in common with that guy sitting next to you in the coffee shop or behind you in line at the grocery store. Written by Drama Desk Award nominees Neil Bartram and Brian Hill, it provides a look at "how all the unique pieces of our separate lives fit together into one big picture.” Tonight's performance takes place at 7:30 at the Helen Rosenfeld Lewis Bialosky Lab Theatre, where performances continue through Sunday. Tickets are $25. (Niesel)