Matt Helm in order
Tounge-in-cheek spy-spoof series staring Dean Martin. Loosely (VERY loosely) based on the series of novels by Donald Hamilton. The films used the name Matt Helm, his cover identity, plus book titles and some very loose plot elements, but otherwise the series bore no resemblance at all to the character, atmosphere, or themes of Hamilton's original books, nor to the hard-edged action of Bond. One reason was the attitude of the filmmakers that the only way to compete with the Bond films was to parody them. 4 films, 6h 54m in all, in release order.

The Silencers
1966 · 102 min · Post-credits scene: yes
Popcorn Flick
Murderers' Row
1966 · 105 min
Snoozefest
The Ambushers
1967 · 102 min
Snoozefest
The Wrecking Crew
1968 · 105 min · Post-credits scene: yes
Snoozefest
Frequently asked questions
What order should I watch Matt Helm in?
1. The Silencers (1966), 2. Murderers' Row (1966), 3. The Ambushers (1967), 4. The Wrecking Crew (1968).
How long does it take to watch all of Matt Helm?
About 6h 54m across 4 released films.
Do any Matt Helm films have post-credit scenes?
Yes: The Silencers, The Wrecking Crew.