Mass Effect 2 NEW INFO!!!!! Sheer awesomeness.

[De85]

Some conversations allow you to conduct certain actions (such as shooting) WHILE selecting dialogue options, as well as intervening using the RT.

 

This will probably only be available during a select few, plot-critical conversations such as the confrontation with Wrex on Virmire where you can decide to shoot him, have Ashley shoot him, talk him down, etc...  The idea really opens up a lot of possibilities though so I hope they find plenty of places to use it.

 

The more I hear about this game the more I want it now.