40. 'Boat Trip' (2002)
Ferrell thankfully didn't have a big part in this, a strong contender for one of the worst movies of all time. It stars Cuba Gooding Jr. and Horatio Sanz as two straight men who decide to go on a cruise to find lonely ladies to hook up with – but wind up getting booked on a gay cruise instead. Deeply offensive on every level, and dreadfully unfunny to boot.