Here is a promotion video off of youtube celebrating DART's 10 anniversary since opening their first rail line. While the video is a year and a half old, it does a good job of showing what is happening in the Dallas area when it comes to light rail.
It is interesting that they mention the recently opened American Airline Arena station as the beginning of a major expansion much as the Intermodal Extension here in Salt Lake is the start of TRAX's major expansion projects.
Hope you enjoy!!