Official synopsis for How I Met Your Mother "Cleaning House" - season 6 episode 2.
Barney Learns the truth about his father when he helps his mother pack up his childhood home.
"Cleaning House" — When Barney convinces the gang to help his mom move out of her home, they quickly learn that she has been very protective of Barney and lied to him about events throughout his life. Meanwhile, Ted gets upset when Robin oversells him to a blind date.
- Wayne Brady returns as Barney's brother, James; and Frances Conroy returns as Barney's mother, Loretta. Tony Award winner Ben Vereen guest stars as Sam.