using 3D animation for architecture has really revolutionised the architectural world because with the ability of 3D animation architects can make there visions that much closer to reality.
here is an example video of a architect company that specialises in 3D animation:
http://www.youtube.com/watch?v=8yiLUOK-z9U
3D animation has also played massive parts in films which can vary from Small special effects too a whole movie production, again like the architecture side of 3D animation, it helps bring the unnatural and unreal that much closer to reality, some examples of films using 3D animation are:
Toy Story
Shrek
Gollum form Lord of the rings
and these are only some of the hundreds of films that use 3D animation, as well as the film section 3D animation is begining to appear in music videos, it isn't as popular as the others but it is starting to grow, here are some examples of music videos that use 3D animation:
Noisia & Mayhem ft. KRS One - Exodus: http://www.youtube.com/watch?v=WPJpXu1O7mM
Parkway Drive - Sleepwalker: http://www.youtube.com/watch?v=15mxiWAYSEw&ob=av2e
Kanye West - Heartless: http://www.youtube.com/watch?v=Co0tTeuUVhU&feature=player_embedded#!
A-ha - Take on me: http://www.youtube.com/watch?v=djV11Xbc914&ob=av2e
All of these are only a sample of how much
