Jeff could not be more different from his brother Pat. Where Pat is a successful businessman in a happy marriage, Jeff lives in his mother's basement all day, smoking weed and watching his favourite film, Signs. Drawing deep significance from the film, Jeff starts to believe that everything in life has a purpose. This takes its toll on his mother, who is tired of Jeff staying indoors all day. Also becoming irritated by his brother's behaviour is Pat, who has much better things to do than pick up after his brother.
One day, Jeff is told by his mother to pick something up from the store. Jeff happily obliges but never gets to the store. Instead, through some seemingly random occurrences, he runs into his brother, who has just conducted a meeting in Hooters. Jeff spots Pat's wife in a café with another man, which alarms the latter brother. Their marriage is in danger, thanks to Pat's narcissism and willingness to buy a Porsche with the little money they have.
Jeff and Pat end up following his wife all over town, in a journey that will ultimately bring a family back together and save a marriage.
Starring: Jason Segel, Ed Helms, Susan Sarandon, Judy Greer, Rae Dawn Chong, Carol Sutton, Katie Aselton, Matt Malloy and Evan Ross
Directors: Jay Duplass, Mark Duplass
Site - http://www.jeffwholivesathome.com