Clue: Commercial power gets people in film careful consideration, in America at least (10)
Answer: ADVISEMENT
Explanation: Commercial power gets people in film careful consideration, in America at least (10)
**AD **("commercial") + **VIS **("power") + **MEN** ("people") in **E.T. **("film") 
VIS means "force or power", according to several dictionaries, although it is not in common usage these days.