Reacher: Amazon's Jack Reacher series

Reacher’s idiosyncrasy of traveling with only a toothbrush is most likely an homage to the old Junior Walker and the All-Stars blues song (I’m a) Roadrunner, which is a great song in its many versions.

“Money, who needs it
Let me live a life free and easy
Put a toothbrush in my hand
Let me be a traveling man”

Along with Reacher’s references to old blues artist like Bobby Blue Bland, very cool aspect to the show