Describe Critical Role to someone who knows nothing about D&D

eponymous-rose:

It’s like a Whose Line is it Anyway game that’s lasted four years where the audience members shouting out suggestions have been replaced by dice, it was already running for two years before someone decided to turn the cameras on, everyone’s become extremely emotionally invested in everyone else’s characters, the points don’t matter (except when they super do), Matt Mercer is playing like ten different characters at once, there are musical segments and limericks, sometimes there are dinosaurs,