Ebon Shar
Explorer
I picked up about a dozen of the Destroyer novels for a dime apiece. Remo Williams, Chiun, Sinanju - they're as enjoyable (in a mindless fun sort of way) as they were a few decades ago when I read them voraciously.
Johnathan
I got pretty heavy into the Mack Bolan books in my youth. Same mindless violence. Each book has essentially the same plot, just more and creative ways for Mack to kill people.