Viacom (NASDAQ:VIA) is in the middle of a rough stretch, with weak ratings from its Nickelodeon, MTV, and Comedy Central networks contributing to sagging revenues and big share-price declines. The stock is down roughly 40% in 2015.

With trouble in TV Land, Viacom is hoping to score big with its movie wing and deliver some key television programs to get things moving in the right direction again. Click through the following slideshow to learn about five franchises that are crucial for Viacom's turnaround effort.