In "Supernova," Tucci plays a man slipping into dementia taking a possibly final road trip with his longtime partner, played by Colin Firth. In “Supernova,” Tucci plays Tusker, a novelist on the edge of early on-set dementia. Speaking by video conference from London, Tucci mused that he might celebrate the film's premiere by a Zoom with Firth, over Negronis. I cooked for Colin when I did “Supernova.” We’ve been friends for a long time so we’re in each other’s kitchens. I’m older but I’m not old yet, I don’t think.