John's arc...especially the end...reminds me a little of Terry McGuiness as well.
bingo. this is exactly why I liked John's arc so much. I was definitely getting the McGuiness vibe the whole time... and having the Batman Beyond car flying around helped too.
edit: just wanted to add that something else I dug in the movie was how Ra's summoned his inner Qui-Gon to commune with Bruce! Ra's = not dead