Ex.-Rep. Bob Shamansky (D-OH) died last week. He only served one term in Congress, during the 1980s, so he wasn't that notable for his political accomplishments. Rather, what is fascinating about him is the temporal range of his career. Shamansky ran for Congress in 1966, in 1980 (when he won), 1982 (when he lost the seat he won), and 2006. In other words, he ran in three separate decades, with an "off" decade in between each.
I have to think that's unique. Condolences to Rep. Shamansky's loved ones.