A billionaire playboy pursues a thief/waitress despite his family's insistence that he marry within his class.
Good for a few yuks, Arthur is a charming film with a lot of good comedic performances, but the best lines come from John Gielgud. Despite being primarily a dramatic actor, Gielgud is fantastic as Hobson, delivering dry, scornfully witty one-liners with astonishing ease. He's an upper-class snob, frequently delving into lower class language, and it's often hilarious. Gielgud shows scene larceny at its finest; Dudley Moore is only noticeably funny when Gielgud isn't stealing the lens.
The plot is predictable, and I didn't think the relationship between Arthur and Linda was well-developed. If I were to risk a substantial fortune for a woman, I would like a few more scenes with her, preferably when I was sober.
Overall, this is a good way to enjoy 100 minutes of innocuous, enjoyable diversion, especially because of Gielgud.