Season 4
Who Do You Think You Are?
AirDate: 9/6/2011
Episodes: 8

Overview:

Kelly Clarkson (S4E1)
9/6/2011
Episode 2 (S4E2)
9/13/2011
Episode 3 (S4E3)
9/20/2011
Zooey Deschanel (S4E4)
9/27/2011
Chris O'Donnell (S4E5)
10/4/2011
Episode 6 (S4E6)
10/11/2011
Episode 7 (S4E7)
10/18/2011
Episode 8 (S4E8)
10/25/2011