In "Episode of Bardock," Chilled is seen holding a Canon camera, yet the special takes place ages before the invention of cameras. Doesn't matter though, since the whole thing was just a Dream Inside A Dream.
The strangeness of super high-tech scientist Bulma using a fax machine in the Android/Cell arc is Lampshaded by Krillin. Future Trunks doesn't know what a fax machine is, which Krillin comments makes a lot more sense.
Homestar Runner: The "Old-Timey" era is supposed to take place in the 1930s, but makes reference to any number of events ranging from the 1800s to the 1950s.
The Town is easily one of the worst offenders. Having characters with technology and cultures from every time period yet to exist and several that haven't and likely won't ever.
Jimmy Fallon's web series "Downtown Sixbey" combines a Downton Abbey spoof with a backstage drama of Late Night joke writing. As a result, they communicate with each other via telegram and observe tea time, yet they're sitting around writing Kardashian jokes.
Used as a gag in a Todd in the Shadows review where Todd points out a pay phone is an anachronism in 2012, yet 2012 saw a song about this "antique" item.
Despite supposedly taking place in ancient Thebes, Oedipus in my Inventory shows the city containing skyscrapers, medieval castles, log cabins with glass windows, and shepherds with sunglasses.
This is one of the points of Hitler Rants (in this case it's used for the Rule of Funny), which in their classic form feature Hitler, in his bunker during World War II, using Internet-age technology and complaining about some modern-era controversy (like Donald Trump's election).
In RWBY, people who fight with swords and other antiquated melee weapons are seen also making use of portable music players, digital tablets and VTOL aircraft. Demonstrated in the "Black" trailer, which pits a ninja and her katana-wielding partner against a horde of robotic mooks on a futuristic-looking Cool Train.
The Evil Empress Guide seems to be this with the various different guidelines. So, our Empress has a blaster at her disposal (guideline 10), can contact the men in her thrall via radio (45), considers hiring a PR firm (48), uses webcam sites to manipulate the population (49) and forbids her Beautiful but Innocent Daughter from shoppng at the mall (56)... but still equips her Amazon Hordes with such "sophisticated weapons" as 10' pikes and longbows (24). As it's a genre-savviness guide meant to cover multiple settings, as well as not meant to be taken too seriously this is perfectly justified.
In the first episode, after reviewing the Back to the Future game for NES, IG goes back in time to kill the CEO of LJN, preventing the game from ever being created; apparently they already had cordless phones and flat-screen TV's back in 1987.
In a joke, IG claims that one obstacle to dodge in Space Race were Imperial TIE Fighters. Space Race came out in 1973, and the first Star Wars film, A New Hope, came out in 1977.
Jim Sterling'sCommentocracy series features Jim dressed as a Victorian aristocrat, talking about video games, interspersed with silent-film style title cards and film grain.