OLED (Organic Light-emitting Diode) is very nice graphic display. This is 0.96" blue color 128x64 pixels OLED display. I2C interface and there is plenty of Arduino library for it. It can really display tons fo information on this compact display.

Features and Specs:

128 x 64 resolution

0.96 inch display

No back lighting with near 180° viewing angle

I2C interface

Arduino compatible (not shield, but library)

Espresso Lite compatible

Application1_Sketch

Application2_Sketch

LCD OLED Datasheet

LCD OLED Application