In 2010, Donald Glover lobbied Sony/Columbia Pictures to cast him as Peter Parker in the upcoming Amazing Spider-Man. While the campaign received a lot of fan support, it also received a fair amount of backlash from racists who believed that Peter Parker's whiteness was somehow a crucial character trait and that casting a talented and funny actor to play Parker would go against Sony/Columbia Pictures' time honored tradition of casting glorified stick in the muds like Tobey Maguire to play the iconic character.
A lot has changed since 2010. Sony cast Andrew Garfield as Peter Parker for the Amazing Spider-Man movies and has reportedly had to scale back their plans to expand their Spider-Man movie franchise after they discovered that Garfield's wooden acting and messy hair just wasn't doing it with moviegoers. Marvel, meanwhile, introduced Miles Morales, a half black, half Hispanic teenager, who took on the mantle of Spider-Man after Peter Parker was killed in the company's alternate universe "Ultimate" line of comics. Now, Disney has decided to cast Glover to voice Morales in an upcoming episode of Ultimate Spider-Man: Web Warriors, a Disney XD cartoon.
This season of Ultimate Spider-Man will see its title character (a teenaged Spider-Man) jump from universe to universe in an attempt to stop the Green Goblin from collecting DNA samples from a host of other Spider-Mans. Glover will voice Morales in at least one episode, when Peter Parker visits a world in which he's died and Morales has taken his place.
No word on when the Ultimate Spider-Man episode featuring Glover/Morales will air, but I'm sure I will probably watch it and stay awake for all 22 minutes of it, which is more than I can say about Amazing Spider-Man.