Batman: Legends Of The Dark Knight (1989) #150
Dick Grayson has read the Spider-Man comics

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Batman: Legends Of The Dark Knight (1989) #150
Dick Grayson has read the Spider-Man comics
Secret and Impulse have read a comic about a certain superhero who got powers from a radioactive spider bite (young justice 22)
!
Grant Emerson and Bart Allen have seen Alvin and the Chipmunks and either seen or read the Smurfs
New Titans (1988) #117
!
Stars and S.T.R.I.P.E. (1999) #6
Conner Kent has seen or read The Smurfs
from superboy 1994 #83! kon el has a gameboy, as well as a hellboy comic, a final fantasy poster, and the works of peter straub (judging by the color and timing of this publication is most likely the book mr. x)
!
EDIT: someone pointed out the dreamcast in the notes and I just noticed a pokeball on the floor too.
Bruce Wayne has read Batman
Alfred Pennyworth has read Batman
Hal Jordan has read or seen an adaptation of Spiderman
The Green Lantern Corps (1986) #205
!
Jason Todd is seen reading Whisper (comic book series by Steve Grant) in Batman V1 Annual #11!
Good eye, I actually read this recently and missed that entirely!