I always love how background artist make you feel like you're really inside the game.
The Secret of Monkey Island is the first adventure game I remember to play. On 90's. Years later they make a remake with new images.
It was awesome for me to see the exactly same bg with new resolution. I still love the pixelated characters, but the overall work is quite nice.
So want to share with you:
The Scumm Bar
There are much more great bg, so if you really want to see it, play the game, you won't be disappointed.
Here some artwork I find about all the series of Monkey Island:
By Miquel M