'Love in a Cab' title sequence created by design and animation studio Mojo. I really like how the flat vectored images have been manipulated to look 3D. The use of drop shadows and textures are a really effective way to separate the individual layers.
Love In A Cab Movie Ending Sequence from Cindy Ashes on Vimeo.
Titles for TV mini series 'The Starter Wife' uses similar techniques to make two dimensional illustrations jump out to you.