Yep, Believe It!
To unlock Palm Pre hidden developer mode.
Open your keypad on the launcher screen and type
Up, Up, Down , Down , Left , Right, Left , Right, B , A , Start.
If you don't recognize this code, it is the infamous Konami Code (more specifically, Contra, though many konami games used it)
~ After that a screen will pop up with the hidden "Developer Mode Enabler"
Once enabled you can connect your pre to the Palm Development SDK as use it to test and emulate software, it is also a way to install 3rd party software from your pc to Palm Pre /Pixie (OS)