I'm making this thread just to compile a list of everything we can find, so we can quickly reference it later on.

Double Rainbow

Dark Souls Easter Egg

Batman and Snow White

Timon and Pumba

Hidden Skins

Scan QR codes for secret messages.

Watch Patricia Tannis Ride A Fish Through Flames

Find the Fallout 3 Gun Dedicated To The Game's Radio Host

Deliver Pizza to the Teenage Mutant Ninja Turtles

Geary's Unbreakable Gear

I went back to Claptrap's place and found the echo that you need to pick up. Legit.

Have fun walking now.

Moxxi doesn't need $1k tips in order to hand you her guns. Spam $100, slowly and you'll get the Good Touch over and over. Easy money.

*edit* Correction. Spam $100 as fast as possible until it won't let you tip anymore. You'll skip dialog you've heard over and over already. Also, save and quit after she gives you the gun. If you keep tipping her, she'll say she'll give you a gun, but she just stands there. Happens each time. I think Gearbox patched it to act that way.

I just gave her about 150k lol.... nothing out of it.

I've collected 30 or so Moxxi SMGs now. Also saw Michael three times. Pretty much doubled the money I had before I started.

I've only just started the main mission on the Eridium blight and I checked out for the LoTR gear in claptrap's place, it was there.

I'm not sure if you need to finish the game once to get it but anyways, yeah, got a nasty sniper from it.

I'm not sure if you need to finish the game once to get it but anyways, yeah, got a nasty sniper from it.

The ring/gear only appears on the second playthrough. So the earliest you could do it is when you get to the Eridium Blight on playthrough 2.

The ring/gear only appears on the second playthrough. So the earliest you could do it is when you get to the Eridium Blight on playthrough 2.

Oh, well that answers my question I guess lol.

I have found most of these except the Snow White thing. Also, I haven't done Geary yet. Tried it and messed it up.