Not sure about Top Gun. Did he need to get busy on the casting couch in order to get roles? Got cast an an outsider by The Godfather (who's always spotted future stars) and then went A list after the success of Top Gun. Not sure about this. TG just springs to mind because of all the rumours about him.
I'd be thinking about someone who had a fairly meteoric rise, The Bodyguard perhaps? Co-starred early on with Lois Einhorn/Ray Finkel, who has been doing tv recently.