Does nobody remember Neighbours? I know it is not strictly a movie but neither were some of the other posts.
They had what i think was an amiga 500 on a trolley with a monitor (like the trolleys you get in schools). They used to have it in Paul Robinsons office. Then when they did a scene in another location, that need a home computer, they would wheel in the same amiga on the same trolley. It was there for at least 5 years.
