The Mac Museum put out this two minute rendition of simple tech desktop computers like the Mac II, IMac G4 and G5 to the more advanced IMac Core 2 Duo.

[youtube=http://www.youtube.com/watch?v=vwJsS_FIt0E&color1=0xb1b1b1&color2=0xd0d0d0&hl=en_US&feature=player_embedded&fs=1]