"Like a Dog Chasing Cars," my favorite post-Goldsmith action cue--which I'm sure was at least mostly a JNH composition (given that the Dark Knight theme heavily present in it and throughout the rest of the score basically vanished for the third film).
I don't subscribe to the belief that Zimmer was a "bad influence" on Howard during this series, but I do believe Howard was a positive influence on Zimmer--whose music, following the collaboration, became as compelling as it had been since his early days.
That's because it's a poor mondegreen and always has been. The syllables never matched the chant. Not sure why it caught on as a meme.
I believe it was actually "Fishy, fishy! Pasta, pasta!"
Anyway, as for mine...
Batman Begins: Macrotus Corynorhinus Lasiurus
(and I also love the music that plays while Bruce and Alfred escape the burning mansion, a theme that doesn't appear anywhere on the album)
The Dark Knight: Harvey Two-Face Like a Dog Chasing Cars Agent of Chaos A Watchful Guardian
The Dark Knight Rises: Gotham's Reckoning Mind If I Cut In? Why Do We Fall?
(TDKR left me underwhelmed following on from the first two, but Bane's theme is pretty addictive and I also love Catwoman's slinky and mysterious theme)