I watched in New York live over RCN in 3.0 (5.1 feeding the receiver, but I have only LCR speakers). The only audio problem I had was that the female announcer's microphone was mixed WAY too low and Billy Crystal's microphone had limited frequency response and was mixed somewhat too low. As soon as a performer hit one of the regular microphones, the mix sounded fine.
This did not sound like phasing issues to me. It sounded simply like a bad mix and/or limited levels coming out of those lavaliers.
As for those comments about how the sound should be mixed (voices in C only or LR or LCR), I can see all points of view. For a movie, you'd want the primary voices only in the center, but for a TV show of this nature, mixing only center could cause a -3db level drop in left and right. And some of the TVs I've owned in the past did really strange things playing back L + R stereo - you could hear the phasing. When listening via TV speakers instead of the large system, I actually usually prefer the sound to be mono.
There are times (other shows) that I think I do have phasing issues from the surrounds being fed to the fronts, but I won't be able to tell for sure until I get surrounds in.