Once again, Ray Walston reprises his role as Boothby (the groundskeeper from Starfleet Academy), this time as a holodeck character. However, he has the same catchphrase "good enough for me!" Oddly enough, Walston has never actually played the real Boothby in the Voyager series - only as duplicates... a holodeck character in this episode, and, as a Species 8472 copy in In the Flesh (1998).
This, the 19th episode of the 5th season of "Star Trek: Voyager," features Ray Walston reprising his role of Groundskeeper Boothby. He first played that role in The First Duty (1992), the 19th episode of the 5th season of TNG].
For this episode only, Chakotay has a new hairstyle, similar to the one that the evil Chakotay hologram has in Living Witness (1998).
Ned Romero (Chakotay's grandfather) appeared in A Private Little War (1968) as Krell and in Journey's End (1994) as Anthwara.
The model used for the chaotic space hulk was later reused as both an unidentified craft at a Ledosian spaceport in Natural Law (2001) and (much more prominently) as the Romulan drone ship in three episodes of Star Trek: Enterprise (2001).