* ActorAllusion: Kato singing along to "Gangstas' Paradise"; Jay Chou is primarily a [=hip-hop/R&B=] artiste, [[NeverLiveitDown with alleged gang connections simply from the production values of his concept videos and the nature of his initial fanbase]]. Then there's him playing the piano [[spoiler:when he sees Lenore behind Britt's back.]] As for the mention of [[http://www.youtube.com/watch?v=PHrq3Ew0T-I nunchucks...]]
** More of irony than allusion, but Jay's breakout role in his native Taiwan also involved hard-and-fast driving in a LiveActionAdaptation, as Takumi in ''InitialD''. The scene with Kato playing with a basketball also alludes to Jay's earlier movie, ''KungFuDunk''. And the massacre of [[spoiler:several gangsters just for wearing green]] parallels a plot point from ''Film/CurseOfTheGoldenFlower''. This is basically ''Meet Jay Chou: The Movie.''
** James Franco as a meth dealer. What was his last movie with Seth Rogen? ''PineappleExpress.''
* CreatorBacklash: Seth Rogen has recently admitted that the making of this movie, and its subsequent failure, was a "nightmare," adding that he'd "sooner not work for a year," then do a sequel. Creator/MichelGondry also recently bemoaned his lack of creative freedom on the film, and regrets directing it.
** Some actors like Edward James Olmos, however, enjoyed working on the film.
* DyeingForYourArt: Seth Rogen trimmed down noticeably for this role, even looking a bit gaunt after his 11-day coma (though that's probably down to lighting).
* FakeNationality: Kato in the radio series, film serials, and television series. While the first radio actor to voice the role was apparently Japanese (Raymond Hayashi), American Roland Parker voiced Kato for most of the series run (as his nationality shifted from Japanese to "generic Oriental" to Filipino), while American Mickey Tolan played the role towards the end. In the serials, Kato's nationality was specified as Korean, but the role was played by Chinese actor Keye Luke. And in the TV series Kato was (presumptively) Japanese (though some sources say that producer William Dozier conceived of Kato as being Korean) but played by Chinese actor Creator/BruceLee.
* MarathonRunning: Creator/{{Syfy}} aired a 13-hour marathon of the series on Jan 11, 2011 to promote the Movie adaption opening later that month.
** And on St. Patrick's Day 2012, Me-TV ran a "Viewing of the Green" marathon of the series.
** And on the weekend of November 7 & 8, 2015, the entire series was run multiple times for that weekend's "Decades Binge" on that network.
* TechnologyMarchesOn: Today, the Black Beauty's aerial scanner feels remarkably more current than anyone could have guessed back in the 1960s with aerial drones becoming increasingly popular consumer items.
* WhatCouldHaveBeen: Van Williams, among others, pushed to give Creator/BruceLee more to do in the TV series since it was obvious that he was garnering the most viewer interest with his martial arts moves, preferably in a hour format. The producers wouldn't budge and the series was cancelled earlier than it could have been.