Something odd
 

I'm not sure how well known this is(so it may be only news to the newbies), but press F9 twice in a single player level so you can see the pos, then type JJ as if you're about to type a code, notice that the JJ appears on your screen, now type any code you want(to activate the code) or just plain nonsense(in the screen shot provided I typed jjscreenshot) if you typed nonsense use the backspace key to backspace whatever you typed. Cool, no?
Screenshot-
[IMG]http://img.photobucket.com/albums/v520/lijik/jazzcode.png[/IMG]

I knew that, what I wonder is why you have two birds..

I actually have 3.
And I have them for no reason.

You used cheats for that, no?

Yes, yes I did.

I knew that for a while..

And once I had 5 birds ;d.

I knew that too. It sometimes helps to write yourself messages when in a lonely SP lvl. :)

I used to freak out hard with this some time ago.

This was mentioned in the second J2S poll back in July 1999. I count it old.