Cross-Dressing Voices: Snail is voiced by Kristen Bone, the voice of Maggie on Maggie and the Ferocious Beast. This has led to a bit of Viewer Gender Confusion, though it's usually made pretty obvious that Snail is male.
No Export for You: To this day, Nick Jr. still has never shown a number of episodes from the program's sixth season. Additionally, the CGI Franklin and Friends was premiered in Canada, with no immediate word on when U.S. viewers might see it.
Not as bad as Malaysia, which has never gotten to see the sixth season at all. Which is pretty strange considering that TV2, the primary station that airs Franklin in Malaysia, brought in the fifth season a few months before Nick Jr. did in the US.
A number of Canada-only Franklin and Friends books were released in September 2012, though Franklin and Friends titles are finally slated for release in the U.S. in August 2013.
The Other Darrin: They managed to keep the same voice, Noah Reid, for Franklin for five seasons and two films, but then the original voice actor's voice got so deep that it just wasn't working anymore. So they got Cole Caplan, who had previously voiced a One-Shot Character named Squirrel, to do the voice. Then, for the final film, they got Cameron Ansell, one of the many voices of Arthur. They also ended up replacing the voices of several other characters in later seasons.
Almost all of the original character voices have been replaced by others in Franklin and Friends, but this isn't surprising, given it's been nearly fifteen years since the originally series debuted. That said, the casting director has done a pretty good job of picking soundalikes for the originals on the whole. All of the kids have new voice actors, but a few of the adults retain their originals. These include, notably, both Mr. and Mrs. Turtle. (Franklin's parents.)
Recursive Adaptation: Many of the TV stories were later released as books. The TV Storybook releases generally followed the storylines of what was shown on television with only minor changes. The Kids Can Read releases, however, were written with beginning readers in mind and were generally strong Adaptation Distillations that only vaguely resembled the original plots.
Short Run In Peru - The fifth season made it to Malaysia two months before it started airing in the US. However, the sixth season... yeah, screwed by the network.
Technology Marches On: It only sort of does. The characters live in a semi-modern society with electricity and such, but certain modern conveniences don't seem to be found. There are no televisions depicted in the books or the television series, though there is a brief mention of watching TV in a song from one of the stage shows. A computer is seen in one of the TV stories, but it's an incredibly primitive model. The library also uses a computer-catalog system, but they're also antiquated models with bulky monitors and text-only displays.
Word of God: This is all viewers have to explain why the character Badger always walks on crutches. According to the official character description, she has cerebral palsy, but this has never been mentioned in either the books or the television series.