School Rumble is probably one of the better slice of life/comedy animes you'll watch. Its complete nonsense, but a great chill anime. The story never gets boring, every other episode or so will have a different twist so you won't lose interest as you go deeper into the story. There's the typical love triangle but conveyed in a very comical way, making it a little different than others. The characters are well developed- you have the typical characters you'd see in every anime (rich blondie, the expressionless one, etc.) but in more depth and additional unique characters.
Need a good laugh? A laid back anime? This is the one to watch.