A drama quasi-biopic movie about a later part of Julian Assange's life is The Fifth Estate (2013); covering Wikileaks, the events of the early 2010s, twenty years later.
The "reel to reel" machine shown to be tracing Julian's phone call, is actually a broadcast 1" videotape machine, which were primarily used to record and transmit video in television stations during the 80's and 90's.