[Jason.]

BB1:
Overrated: Nick
Underrated: Caroline

BB2:
Overrated: Helen
Underrated: Penny

BB3:
Overrated: Jonny (I know he's not that popular, but he had enough support to make it to runner-up)
Underrated: Adele

BB4:
Overrated: Jon
Underrated: Anouska

BB5:
Overrated: Victor
Underrated: Becki

BB6:
Overrated: Science
Underrated: Vanessa

BB7:
Overrated: Glyn
Underrated: Lea

BB8:
Overrated: Ziggy (He made it to fourth)
Underrated: Nicky

BB9:
Overrated: Mikey
Underrated: Sylvia

BB10:
Overrated: Siavash
Underrated: Karly

BB11:
Overrated: John James
Underrated: Sunshine

BB12:
Overrated: Aaron
Underrated: Heaven

BB13:
Overrated: Conor
Underrated: Shievonne

BB14:
Overrated: Dexter
Underrated: Jemima

BB15:
Overrated: Toya
Underrated: Danielle

BB16:
Overrated: Marc
Underrated: Adjoa