http://twominutetimelord.com/podcasts/2mtl-280.mp3Podcast: Play in new window | DownloadWell, pardners, there's no song 'n dance in "A Town Called Mercy," DOCTOR WHO's first Western since "The Gunfighters." It ain't a barrel of laughs for the Doctor this time, either. This is why y'all can't have long hiatuses in this TV show anymore; the hero tends to go …