mirror mode in any Rom?

[project.in.process]

looking to root my Thunderbolt in the upcoming days, but really looking for one particular feature to use which will seal the deal.

are there any ROM's which have mirroring capability? if i'm not using the correct term--i'm looking to duplicate the phone screen on the television screen (via any means necessary--heard there was a USB to HDMI converter--possibly only a rumor)

i love the TVShowsStream app and would like to use that on my HDTV if possible.

thanks in advance