Yoshi's Island
Blaster Master
backgrounds of YI, and some of the effects in blaster master would be quite interesting to analyze.
I am more interested in what I've posted in the "favorite pixelart thread"
Earth Worm Jim 1-2 -both background tiling and animation are superb
Boktai 1-2-the simple stroke aproach fits the perspective's intrinsical mood perfectly, while still allowing for a great level of aesthetic beauty, hueshifts are also handled beautifully-I already have some screenshot suitable for analysis.
Comix Zone- very well thought out aesthetic proposition used in gameplay's favor, beautifully achieved strong saturation hueshifts, also some very concise and frame effective animation.
Batman1-excellent use of primitive console resources.