These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The Russian version of the intro song known as New Adventures of Speed Racer is permanently etched into subconscious of a whole generation.
Germans Love David Hasselhoff: While not exactly obscure in Japan, Mach GoGoGo is mostly known there for being popular in America. In fact, even the Japanese dub of the live-action film kept the American title and names of the characters and the 1997 remake was mainly made with the intention of dubbing it overseas.
Subbing vs. Dubbing: Many people actually prefer the dub because, well, a lot of people grew up on it and it has its Narm Charm from being made in the 60s.
Woolseyism: The "ninjas" were changed to "Assassins" in the dub. Which is actually correct.
Also while it did have renames, cut scenes and so on, it was one of the very first anime imports that tried to keep the spirit of the original show as faithfully as possible.
Awesome Music: Reboot, played during the final race in which Speed restarts his car from being burned out during the race and comes from dead last to first place. The song combines and recreates old pieces of the original Speed Racer soundtrack with a more modern and high-tech feel, with a bit of chorus in the background, culminating in the perfect musical accompaniment for Speed's main Moment Of Awesome.
Better Than Canon: In the anime, Speed was a Boring Invincible Hero who ALWAYS WON...and yet, only because Racer X always let him. In the movie, Speed is still important (as in The Chosen Oneof Car Racing), but he's toned down a bit, and this time he's better at racing than Racer X, so his victories don't seem so cheap. Trixie taking a slightly more active role is also well-received.
Creator's Pet: The producers grossly overestimated how much the bulk of the audience would like Spritle.
Misaimed Marketing / Trailers Always Lie: The advertising blundered just enough to make a difference. It appeared to be a purely badass action movie with eye-popping inventive visuals. It turned out to have a more childish tone, in keeping with the anime. The advertising also downplayed the presence of Spritle and played up the presence of Christina Ricci.
The Scrappy: With the possible exception of the Casa Cristo fight scene (maybe there wasn't another way for them to get out of that mess), the movie would've been just fine without Spritle and the monkey.
Snake Oiler is one of the whiniest and most annoying villains to appear onscreen. Though granted, that's likely the point.
So Bad, It's Good: Possibly Invoked. Either way, be it design or accident, it's a damn awesome movie if you're in the right mindset.
Tear Jerker: The family watching Rex's fakeFace-Heel Turn and subsequent death. Even knowing what will probably happen as a result of knowing the cartoon, watching the family deal with this is downright heartbreaking.
Vindicated by History: Upon the film's release in 2008, it was both a critical and commercial bomb. However, as more and more people have discovered the film in bargain bins, many are now hailing it as one of the most faithful adaptations ever, extremely fun, and with groundbreaking visuals. Indeed, its anime-esque visual style is even beginning to appear again in films that would by released several years later, such as Scott Pilgrim, Sucker Punch, TRON: Legacy, and to an extent, Pacific Rim.
The film has also influenced a big-budget blockbuster franchise. It was after proving that bright, high-energy, almost cartoon-like action would work in live-action film that Genndy Tartakovsky was tapped to storyboard Iron Man 2 because his personal style is very much like that seen in Speed Racer.