Detective Conan, City Hunter Recommendations
They both have the same feeling when I watch them.
Kogoro Mouri and Ryo Saeba also share the same voice actor in Japanese (Mouri's VA was changed at ep553) and funny enough, both Mouri and Saeba are Pervy funny guys that solve crimes/help people. Tho i gootta say that Ryo is way more competent in his job. B
Both anime also are directed by the same person what makes them feel more alike.
I gotta admit they don't look much alike at first but if you enjoyed one of them I bet you'd enjoy the other one aswell.