The Amazing Race 18: The eighteenth season of the race brings back former teams who have 'Unfinished Business'. The returning teams all have something to prove, as they begin their battle for redemption. The returning contestants include former NFL cheerleaders, Harlem Globetrotters, cowboys, a Gothic couple and The Amazing Race's only deaf contestant, racing with his mother, who are one of an unprecedented four parent/child teams. Commencing on February 20, 2011, the returning teams will travel the world for a second time, vying for revenge, redemption and a million dollars. The Amazing Race 17: The seventeenth installment of the race became notorious on YouTube before the season even began, with a watermelon ricocheting onto a contestant's face. The racers departed on September 26, 2010, with teams including a pageant queen and her father, a father/son team of Internet sensations, the first African-American gay team, home shopping television hosts, a pair of female doctors, beach volleyball partners, and a recently reunited birth-mother and daughter. The race visited two new countries, Ghana and Bangladesh, and introduced two new twists -- the Express Pass, which could be used to bypass a single task on a leg (used only up to the eighth leg), and the Double U-Turn, which involved two teams forcing two different teams to turn back and complete both Detours. In the end, the season, seemingly themed around woman power with several, several strong, formidable women competing, culminated in two all-female teams running the final leg, along with a young dating couple.