On the wall you can see that Toto has tattoo designs of the Corley Motors logo from Full Throttle (top right) and Max (middle left)
Game:
Grim Fandango
The Full Throttle interface is visible on the bridge in the bottom right hand corner
Game:
Grim Fandango
The guy at the festival says he can make a balloon based on famous poets. Manny chooses Robert Frost, the American late 19th and early 20th century American poet
Game:
Grim Fandango
This was the same line said by Ben Throttle outside of the shareholder's meeting in Full Throttle
Game:
Grim Fandango
The guy that has his arms outstretched with a ray between them in the LucasArts logo can be seen in the upper left hand corner of the mural
Game:
Grim Fandango