Kari Byron, Tory Belleci and Grant Imahara rank history's greatest inventions, heists and more.
Countdown
6
The Real Housewives of Potomac
5.9
Wipeout
6.4
Making the Cut
Love Island Games
7
Shahs of Sunset
6.6
Bad Girls Club
6.3
Jersey Shore: Family Vacation
7.3
Glow Up: Britain's Next Make-Up Star
6.8
60 Days In
6.7
Temptation Island
6.9
Mama June: Family Crisis
8.5