Building level Technology/Teacher Specialists

I am interested if anyone has teachers in their building that serve as a go between for teachers and technology specialists.  We have a program in our school district that I'd like to revamp.  Currently, it works like this:

One or two teachers from each building are chosen to work with Technology Specialists on curriculum projects that integrate technology, introduce and support new hardware/software to
building staff, and to be key participants in the text book
adoption and implementation process in evaluating technology
components associated with potential series’. Main roles include:

• Are involved in the technology adoption process for textbooks and curriculum in general
• Aid as assistants to other teachers in training them on new software, hardware, etc. based on curriculum adoptions
• Select Videoconference Field Trips based on curriculum
• Act as building/grade level/ and department liaisons for instructional technology
• Are supplied with the needed software and hardware to effectively "test" new initiatives

Anyone have anything similar that works well for your district?  Would love details on how we can make this program the very best.

Thanks!