I agree w/ Browning about the bass... many of the shows on that network seem to have a tremendous amount of constant bass going on.  Spike TV has very good picture quality for new UFC stuff, as well as The Deadliest Warrior show, but Dolby Digital is few and far between on that network so its not all perfect.  I would say go ahead and avoid anything on TNT and TBS... they have a habit of stretching SD programming and calling it HD... for that matter, Cartoon Network HD is guilty, as well...