A reader asks:
I've recently seen a film I think where there were several split screen boxes - I think it starts off with one guy, his phone rings, intro the guy on the other end - someone else then either gets intro'd or one of the previous guys hangs up and dials someone else - whatever, in the end there are several people on screen either interacting or have just interacted with each other via phone. I can only liken it to this (YouTube) but done as a split screen.
Wall Street? Charlie Sheen calls someone with an insider stock tip, who then calls someone else, who then calls Oliver Stone appearing in a cameo, and so on.
Please leave possible answers in the comments.
UPDATE: The answer is indeed Wall Street.