During this episode it is revealed that Klingons have visible ridges on their spines and feet as well as their foreheads.
Dr. Russell makes reference to a paper Dr. Crusher has written regarding cybernetic regeneration. Crusher had previously mentioned developing a workable approach on this in 11001001 (1988).
In many episodes (especially in Ten Forward), there is a pyramid-shaped game on the table in the setting. This is the first instance in which one is actually being played with.