My local sports radio station has been up in arms about last weekends CBS feed of the tournament. According to one of the hosts, CBS had a bandwidth problem with so many games to cover. They sent the feed in standard definition for use by cities which carried a game from start to finish (i.e. local team), and sent the feed in HD for use in markets where the game wasn't fixed. I noticed this in the Washington DC area where the Maryland game was in standard definition, regardless of whether you were using OTA or the Satellite. The bandwidth issue might also explain why some of the broadcasts were almost unwatchable.