The very first BatClimb, in fact (it was the series pilot) and yes, a Riddler episode. 222 Glover Ave. was the address of a nightclub, so Robin, being a law-abiding (but youthfully underage) citizen, was obliged to wait outside.Who remembers "222 Glover Avenue" (and who had to wait in the car on arriving there)?
Holy Recall, M'Sharak! One of the Classic BatClimbs, if memory serves...always one of my favorites. I remember it was a "Riddler" episode, but I do not remember who had to wait in the car.