'Under the gun' episode
Who played Oscar???
shareCheck out this page: http://www.tv.com/shows/empty-nest/under-the-gun-10290/.
It says that Oscar was played by Jonathan Carrasio.
This is confirmed on this page: http://epguides.com/EmptyNest/guide.shtml.
And this page: http://www.tv.com/people/jonathan-carrasio/.