Arkham City remaining Easter eggs

[Huang]

Right now, I'm playing Batman; Arkham City and I'm close to a platinum trophy.

But besides getting all trophies, I'm a fan of eastereggs and hidden references,
and I was just reminded of an interview with the producers of Arkham City, where they mentioned that 4-5 eastereggs still haven't been found.

So, my question is, if there are any hardcore Bat-fans or AC-players here;

Are there any references or eastereggs you found in the game, that haven't been mentioned on the internet yet?
If so, where and when in the game did you find it?

I'm curious^_^

EDIT: The one I found myself, allthough I'm not sure if it's a known easteregg, but the pianotunes you hear on the radio (Also on the radio where you hear Jack Ryder in Arkham Asylum)
are the same tunes from the Batman Forever game on the SEGA Genesis.

[TheAdamSlasher]

Man i wish i was close too a platinum trophy i suck at the challenge maps now i stopped playing

[Huang]

Man i wish i was close too a platinum trophy i suck at the challenge maps now i stopped playing

I know, they're really hard. I still haven't got all of them. Those are the last things on my list to get the trophy.

[PAIN86]

this may help you

[Huang]

Thanks, but I already know about these.
Like I said, I was looking for eastereggs that were not yet mentioned online^_^

[★-Punk-]

they dont exist , i just dont know which way to look anymore ... hqahqa

[★-Punk-]

this may help you

this are the only ones out there

[Huang]

they dont exist , i just dont know which way to look anymore ... hqahqa

In a recent interview by IGN the producer from Rocksteady mentioned that there were still 4-5 eastereggs not found..
That's why I'm curious if anyone else have found something.

[PAIN86]

did you see that stalker dude on the rooftop at the beginning of the game? when bruce gets arrested and walking in at the gates?

[Huang]

did you see that stalker dude on the rooftop at the beginning of the game? when bruce gets arrested and walking in at the gates?

Yep, Azreal. Allthough I did found that one pretty late. It took me 6 playthroughs untill I saw it.
There's also a giant image of him in the church's window.

[★-Punk-]

yeap that was the first thing in the game ....... there's some stuff in the msusim of some other character that batman had capture ... i dont know if you saw does .... they were open