So I came across a pretty nice one I thought we would all find useful. It's called raid voice and it basically shows who's talking in TS or Vent. It also has an option to mute or lower in-game sounds when someone is talking. It can be found here:
http://wow.curse.com/downloads/wow-addons/details/raid-voice.aspxAlso, since I've been doing some of the new Cata raids I have found and heard from others raiding that Deadly Boss Mods is kinda dropping the ball. It's not notifying of important events, now I would say that it's because they don't have enough data yet but the xpack has been out for a few weeks now and still nothing. However, BigWigs Boss Mods seems to be on the ball with everything needed for raiding. I have disabled DBM for the time being and will begin using BigWigs...I'll post a follow up after I have done some raids with it. It can be found here:
http://wow.curse.com/downloads/wow-addons/details/big-wigs.aspx