Ellen Geer (Dr. Kila Marr) is the daughter of Herta Ware, who previously played Captain Picard's mother Yvette in Where No One Has Gone Before (1987).
This is one of the few occasions on which Data demonstrates his ability to mimic accurately the speech patterns of other individuals. Other examples include Encounter at Farpoint (1987) where he repeats Q's depiction of the trial against humanity, Brothers (1990) where he employs Captain Picard's voice authorization codes to commandeer the main bridge, and Descent, Part II (1993) where he mimics Captain Picard's voice to toy with Geordi.
The destruction left by the Entity was accomplished by adding eighteen-inch miniature trees to the foreground after the live filming of the fleeing colonists. Robert Legato noted that the light beam was animated on computer afterwards, but the "sand trap" was actually a four-foot-wide tarp spread along the ground with air shot up from under it through the mesh.
When Geordi La Forge compliments Dr. Marr on her professional handling of a console in main engineering, an LCARS graphic is seen for a short time. This is a re-use of the hydrogen-alpha emission (with the 4077 M*A*S*H (1972) serial number) from Half a Life (1991).