1.8 SPI LCD module is a great little display. It uses 5 I/O pins (4 if using the Arduino Reset). It displays clear graphics and text, and has a microsd slot on the back.
I connected the display as follows:
Display - Arduino
VCC - 5v
Gnd - Gnd
SCL - pin 13
SDA - pin 11
RS/DC - Pin 9
Reset - Pin 8
CS - pin 10
The zip file available from download from their site has an pre-1.0 library. I had to change WProgram.h to Arduino.h in ST7735.h to get the samples to compile.
We will be using this display shortly to show temperature, humidity, and barometric pressure, and log the data to a microsd card.