Film session with popular thespian dropping cocaine (10)

I believe the answer is:

terminator

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'film' is the definition.
(The Terminator, 1984 film)

'session with popular thespian dropping cocaine' is the wordplay.
'session' becomes 'term'.
'with popular' becomes 'in' (I am not sure about the 'with' bit.).
'thespian' becomes 'actor' (synonyms).
'dropping' indicates named letters should be taken away.
'cocaine' becomes 'c' (drugs abbreviation).
'actor' with 'c' taken out is 'ator'.
'term'+'in'+'ator'='TERMINATOR'

Can you help me to learn more?

(Another definition for terminator that I've seen is " satellite line".)

I've seen this clue in The Guardian.

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