Some interesting interior shots during an SA-8 launch, from a Belarussian company proposing an upgrade. Note the coarse resolution of the plan/azimuth/range displays. There are apparently also videos of SA-3 launch, elsewhere on the site, but I haven't seen those yet.
http://www.tetraedr.com/video_osa.php
http://www.tetraedr.com/video_osa.php