HBO Brothers Lift Weights TogetherA stalker tipster reports seeing, just now, Meadow's boyfriend Finn from the Sopranos and Brenda's crazy brother Billy from Six Feet Under working out simultaneously in the weight room at the SoHo Equinox. Jeremy Sisto, aka Billy, is "surprisingly beefy," according to the tipster, while Will "Finn" Janowitz looked "skinny - had seen him there before." Both must have been engrossed in exercise, because neither star noticed the other, even though their defunct HBO shows overlapped.