* KTGF ch.16, Great Falls Montana -- was an NBC affiliate until 2005, when it flipped to Fox, later becoming independent. In Steptember 2009, financial problems led KTGF to be flipped to JCTV, TBN's young adult network. That station was what inspired me to start this thread, especially since this station, once a Big 3 affiliate, "fell" the farthest.
Going the other way, in the early-to-mid 70's, Pat Robertson built his 2nd station in Atlanta (WHAE/46), which is now the CBS affiliate (with a little help from the great New World (Order) swaps that included WAGA to Fox)
As was the case with WXNE/25 in Boston, which was originally owned by CBN when it signed on in 1977. It gradually became a conventional independent during the early 80s, and CBN sold it to FOX in January 1987. Although the station affiliated with FOX in October 1986, CBN refused to air the Joan Rivers show, and FOX ended up airing the show not on another TV station such as WSBK, but on a radio station. The station is now WFXT.