Every season, the Christmas episode of "Saturday Night Live" packs the late night sketch comedy series with holiday-themed laughs. Typically, there are some big guest stars who pop up just for the hell of it, but due to a big announcement just hours before the episode aired, the show hosted by "Elvis" star Austin Butler became somewhat of a bittersweet affair. "SNL" announced that Cecily Strong would be leaving the series after 11 seasons, and this episode marking the halfway point of the...