2012 was the year when the series finale of Make it or Break It ended.
 The final episodes of Dexter, How I Met Your Mother and Game of Thrones, in particular, caused massive backlash from both fans and critics upon airing, and are often regarded as the worst finales in recent memory
A series finale may not be the last aired episode of a show, such as King of the Hill, which produced "To Sirloin with Love" as its series finale, though four more episodes produced before it were aired after in syndication

