Dumbing Down a Nerd’s Pastime

It’s amusing to think that a generation of movie watchers may be unaware that Hugh Grant was once a floppy-haired charmer. Playing a duplicitous failed actor in “Paddington 2,” a murder-minded politician in “A Very English Scandal,” a sleazy tabloid reporter in “The Gentlemen” and himself on the red carpet at the Oscars, Mr. Grant in maturity is proving to be one of the screen’s most entertaining miscreants. He is the most delightful element of some very good movies. He is also the best thing about “Dungeons & Dragons: Honor Among Thieves.”