Mad Men may revolve around Don Draper, but more than a few guest stars have taken their turns in the spotlight.
Over the years (all eight of them), the series, which signs off for good this weekend, has hosted numerous guest stars for all kinds of crazy plots -- old lovers, snotty villains, priests, losers.
[seealso slug="mad-men-historic-details"]
From the famous faces who could never really blend in, to the characters who wrecked our hearts with tragic plotlines, these are 17 guest stars we'll never forget.
[nggallery id=22556 layout="list" title="top"]