Fringe
Pseudo-scientific terms floating in coloured fog — and the colour is the plot: the palette changes to tell you which universe or era the episode is set in.
3 sequences53rd most looked up of 479 in the 2000s
Season 1
22sThe first season's blue version. Later episodes recoloured the same sequence — amber, red, silver — to signal a different reality, which makes this one variant of several.
Season 4
21sThe amber version. Same sequence, same terms, different palette — and the colour is doing the exposition, telling you which timeline the episode belongs to.
Season 5
23sThe final season jumps to 2036, and the floating terms change with it — the vocabulary of the opening tracks what the show is now about.