Lost: Season 3
Despite having a cast of strong main characters, the show got sidetracked by its, well, side characters. This season "lost" its focus when it left Jack, Locke, Sawyer and Kate and tried to make fans care about the annoying Nikki (Kiele Sanchez) and Paulo (Rodrigo Santoro). So don't feel too bad about fast-forwarding ahead. Mercifully, the show's vision soon returned to the core crew’s fascinating flashbacks, flash forwards and flash-sideways, which kept fans obsessed until the end.