The 17 best TV series finales of all time, from 'The Americans' to '30 Rock'

"The Americans" ended last week with an incredible, thrilling finale that was the perfect cap to a phenomenal series.

Series finales are difficult. They require an ending, but not too much of an ending, and often don't go well. After "The Americans" blew us away, we're fondly looking back on some of the best series finales from the distant and recent past.

Here, we collected some of the greatest series finales that left us shaken, happy, or confused in the best way possible.

Here are 17 of the best series finales of all time, from "M*A*S*H*" to "The Leftovers":