Their famoust coedit work is POLTERGEIST. Spielberg made E.T. at the same time but Williams was still working on the soundtrack, and that is why he used Goldsmith talent in horror music. The others is GREMLINS and GREMLINS: A NEW BATCH. In these two films Spielberg asked Goldsmith himself to make the score, and later he became the composer of the Joe Dante works. And of course INNERSPACE.