One of my absolute favourites is Inugami-san and Nekoyama-san, as it manages to be funny, cute, lewd, and touching all at the same time (though it should be noted that there is also a considerable amount of drama, as the story goes on).
Although many people seem to think poorly of it, another long time favourite of mine is Hayate x Blade, which, while light on the yuri, is very funny and has an amazing character roster.