All screencaps are taken from the trailer and first look video at the official Monsters vs. Aliens site. Feel free to use caps however you want, no credit necessary.

"I'm not a quack, I'm a mad scientist! Mwahahahahaaaa!!!"

It seems our dear Dr C was originally drawn with blue eyes.

Is that a jet pack?

I love the notepad (see icon).

"Oh dear..."

"FOOOOT!!!"

"As you can see, he has no brain."

So heroic! I love the antennae.

Ditto the moustache.

So who sees a resemblance?