Barbara's accusing Bruce of manipulating Terry into becoming Batman mirrors Robin's accusing Batman of manipulating Barbara into becoming Batgirl, in The New Batman Adventures "Old Wounds".
For the first time Terry makes reference to his time in Juvenile Hall. The reasons for his conviction aren't disclosed until "Big Time".
Melissa Disney is credited as the voice of Curaré, even though the character only grunts and never actually speaks.
Barbara mentions the time she and Dick dated. Their involvement was explored in The New Batman Adventures episode "Old Wounds". It's also hinted that Barbara was once romantically involved with Bruce, which was later confirmed in "Out of the Past".
Curare, sans the accent, is the name of a poison found in a South American plant, normally used to poison darts and arrows.