I have noticed that alot of these episodse have been reworked or have influenced later Science Fiction movies; "I-Robot" being one of the more imediately obvious examples. "If These Walls Could Talk" however has a reverse relationship. The plot is a slight twist on a mix between"The Blob" and its 1980's remake.
In general though I think the relationship these episodes have with the Science Fiction genre in general since it has been on the air is a testiment to the quality of this series. Now if they could only do this with MTV's "Daria". :D