This is one that is sometime hard to find, rarely you see it in a recommendation list or a top list.

                                     Desert Punk (2004)

                 

This is a really funny anime about a guy that they call "Sunabouzu", he a unbeatable bounty hunter in a  post-apocalyptic world, but at the end of the day he has a weakness...

                                             

Is not a ecchi focused manga, it is a comedy that is not often seen in animes nowadays. If you want to have a great time see it.

                                      

Here is a link: http://kissanime.ru/Anime/Desert-Punk-Sub