Sixteen houseguests enter the house for a chance to win $500,000. In the seasons twist, every houseguest would compete, be nominated, and be evicted as couples.
9 x 1- 9 x 2
- 9 x 3Nomination Ceremony #1 | Big Brother Season 9 Episode 3 Feb. 17, 2008
- 9 x 4PoV Comp #1 | Big Brother Season 9 Episode 4 Feb. 19, 2008
- 9 x 5
- 9 x 6Nomination Ceremony #2 | Big Brother Season 9 Episode 6 Feb. 24, 2008
- 9 x 7PoV Comp #2 | Big Brother Season 9 Episode 7 Feb. 26, 2008
- 9 x 8
- 9 x 9Nomination Ceremony #3 | Big Brother Season 9 Episode 9 Mar. 02, 2008
- 9 x 10PoV Comp #3 | Big Brother Season 9 Episode 10 Mar. 04, 2008
- 9 x 11
- 9 x 12Nomination Ceremony #4 | Big Brother Season 9 Episode 12 Mar. 09, 2008
- 9 x 13PoV Comp #4 | Big Brother Season 9 Episode 13 Mar. 11, 2008
- 9 x 14
- 9 x 15Nomination Ceremony #5 | Big Brother Season 9 Episode 15 Mar. 16, 2008
- 9 x 16PoV Comp #5 | Big Brother Season 9 Episode 16 Mar. 18, 2008
- 9 x 17
- 9 x 18Nomination Ceremony #6 | Big Brother Season 9 Episode 18 Mar. 23, 2008
- 9 x 19PoV Comp #6 | Big Brother Season 9 Episode 19 Mar. 25, 2008
- 9 x 20
- 9 x 21Nomination Ceremony #7 | Big Brother Season 9 Episode 21 Mar. 30, 2008
- 9 x 22PoV Comp #7 | Big Brother Season 9 Episode 22 Apr. 01, 2008
- 9 x 23
- 9 x 24Nomination Ceremony #8 | Big Brother Season 9 Episode 24 Apr. 06, 2008
- 9 x 25PoV Comp #8 | Big Brother Season 9 Episode 25 Apr. 08, 2008
- 9 x 26
- 9 x 27Nomination Ceremony #9 | Big Brother Season 9 Episode 27 Apr. 13, 2008
- 9 x 28PoV Comp #9 | Big Brother Season 9 Episode 28 Apr. 15, 2008
- 9 x 29
- 9 x 30
- 9 x 31
- 9 x 32
- 9 x 33Season Finale | Big Brother Season 9 Episode 33 Apr. 27, 2008