My love of The Littlest Hobo was either a precursor of or a contributing factor to my obsession-to-be with shows such as the A-Team and Quantum Leap. The basic premises, after all, are the same: Traveller(s) roll into town just as someone needs a problem solving that no-one else can help with. The traveller(s) help out and then continue off into the sunset ready for another adventure next week...
It's not a kids' show, but for comparison...