First of all, that's 4 cable + 1 premium. TNT is there twice. Second, My USA/TNT/FX comment was about a style of channel that CBS is missing. If that channel existed I think it would be the right location for Trek TV. But it doesn't exist yet. Of the current available channels I think Showtime is the most likely because TV production is being kept in house these days. If Showtime won't take it and CBS is committed to launching the show I see TNT since CBS at least has a working relationship with Time Warner(from CW).