Montage:

the technique of combining in a single composition pictorial elements from various sources, as parts of different photographs or fragments of printing, either to give the illusion that the elements belonged together originally or to allow each element to retain its separate identity as a means of adding interest or meaning to the composition.

Courtesy of Dictionary.com

Yes, Alvin, I've done my homework.

When having next dinner ?? =D

p/s: PLEASE BLOG TOO! =)