It doesn't have to be whole drama, even one episode, one sentence is enough, as long as it's the issue of accepting, adopting foreigners or some prejudices, positive opinions, etc. They don't have to appear in person, for example in Tokyo Bandwagon, Madock-san is not treated particularly different, not any strong opinions are said about him.
Dramas:
Massan (obvious, but besides Ellie, the final pictures are quite interesting)
Tokyo Bandwagon (madock-san, however not that important)
Movies:
Tamatama (setting)
The Foreign Duck, Native Duck and God in a Coin Locker (japanese-learing issues)
Sayonara, Minna (foreigners as specific areas inhabitants)
Thanks!