Very briefly, here is one last Shakespeare allusion in 3rd Rock from the sun—once again provided by avid Bardfilm reader and Twitter user @GtThee2ANunnery.
In this episode, the aliens confront human prejudices against them, delivering a riff on Shylock's "Hath not a Jew hands?" speech. Of additional interest is its delivery to George Takei—Mr. Sulu of Star Trek fame, brining to mind Data's use of the same speech in a Star Trek: The Next Generation episode (for which, q.v.).
In any case, here it is!
Links: The Episode at IMDB.