It's been my experience that Starz Cinema will occasionally run movies in almost OAR. Recently aired one of the LoTRs in what looked to be close to 2.35:1. The HD channels will run films in widescreen, but not necessarily OAR.
DirecTV has a bundle of channels: SONYHD, MGMHD and UHD that air films that are closest to OAR.
(I had Fun, fun, fun 'til Katrina took my Ti-Vos away)
"Fat, drunk and stupid is no way to go through life, son."
Dean Vernon Wormer