Richard Dreyfuss has joined Showtime’s Weeds as a recurring. In at least 4 episodes of the dark comedy’s upcoming 6th season, he will play what the network describes as “an unexpected character from Nancy Botwin’s past.” Season 6 of Weeds, which premieres on August 16, features Nancy (Mary-Louise Parker) and family on the lam after Shane (Alexander Gould) bopped Mexican VIP Pilar to death with a croquet mallet. Dreyfuss joins previously announced guest stars for next season Linda Hamilton, Peter Stormare, Mark-Paul Gosselaar, as well as returning guest stars Alanis Morissette and Jennifer Jason Leigh. Oscar winner Dreyfuss made his full-time series debut with CBS’ The Education of Max Bickford. On Showtime, he previously starred as Alexander Haig in the 2002 docudrama The Day Reagan Was Shot.