The Ultimates
Pan sketch of Thor. This is quite large an image, at least 2 standard sheets tall.
Sketch from the Ultimates
 Spiderman Animated Series 
Maximus Boltagon from Spiderman
Maximus Boltagon from Spiderman
From the Deadpool episode of Spiderman.
Key sketch.
Spiderman, you really shouldn't be surprised!

Rough layout sketch for the whole scene, and a key sketch from the scene.
Layout sketch
I think this is from the beginning, but he's moving so fast, its hard to pause it!
   
   
   
Doctor Strange Animated Feature Film
Doctor Strange concept art
Doctor Strange Concept Art
Doctor Strange Concept Art