Following is a list (always being updated, never 'complete') of companies world-wide, that are involved in CG content creation.

For ones with just names (no links) or with broken links, just Google them (along with obvious keywords such as 'CG', 'animation' etc.).

Please feel free to send me more names/links to add.

Animation

DreamWorks Feature Animation
Pixar
Disney
Blue Sky
Laika
Laika's commercials reel

Visual effects/commercials

ILM
Digital Domain
Sony Imageworks
Rhythm & Hues
Blur Studios
Imagemovers
Escape Studios
Pac Title
RezN8
The Asylum
Stan Winston Studio

Animal Logic
Weta Digital

Cinesite
Framestore
MPC
The Mill

Games

Electronic Arts (EA)
Blizzard
Id
Maxis

Schools

Gnomon
Full Sail
Woodbury
VFS
SCAD
Ringling

Other (medical, industrial..)