Are you the double agent or am I
Suits. Gadgets. Lies. One-liners. The joy of watching professionals do illegal things with excellent posture. These are the spy movies that hit different tones: classic, modern, and stylishly ridiculous. Pick your flavor. Keep your alibi.
The Picks

Bond in the early days: simple mission, iconic vibe, and fewer cinematic-universe headaches. Clean spy comfort food.
Official synopsis
Agent 007 battles mysterious Dr. No, a scientific genius bent on destroying the U.S. space program. As the countdown to disaster begins, Bond must go to Jamaica, where he encounters beautiful Honey Ryder, to confront a megalomaniacal villain in his massive island headquarters.

Spy movie with style turned up to 11. Suit violence, umbrella violence, british word violence and a church scene that made people pause the movie.
Official synopsis
The story of a super-secret spy organization that recruits an unrefined but promising street kid into the agency's ultra-competitive training program just as a global threat emerges from a twisted tech genius.
Honorable Mentions

Bond reboot where the punches hurt and the poker is life-or-death because cinema logic. Peak modern spy movie.
Official synopsis
Le Chiffre, a banker to the world's terrorists, is scheduled to participate in a high-stakes poker game in Montenegro, where he intends to use his winnings to establish his financial grip on the terrorist market. M sends Bond—on his maiden mission as a 00 Agent—to attend this game and prevent Le Chiffre from winning. With the help of Vesper Lynd and Felix Leiter, Bond enters the most important poker game in his already dangerous career.