Well, as many have said, the comedy is fantastic. The second best comedy I've ever read. The characters are lovable, complex, and best of all, completely uncliched. Yet the story itself is also creative, fast-paced and engaging. The drama isn't ever overly dwelt upon, and there's constant comic relief, but that comic relief doesn't ever hurt the presentation--the drama is extremely well-constructed and can be taken seriously (in fact, the subject matter is often more mature than most pure dramas--like a seinen).
The lead character, Shautieh, is a dirty-minded yet valorous prankster. He's not just your typical anti-hero, however. Like the series description states, much of Shautieh's eccentricity lies in "the humiliation he puts himself and his opponents through in bowling alleys." However, he also has a serious side. 19/20 times Shautieh is at ease, being himself (which to the reader means "humorous" and to the other characters means "offensive") but the other 1 time out of 20 his face is uncaricatured and he has a serious expression on his face, usually one of concern or passion or intensity. They seem like insanity to everyone else, but Shautieh's words and actions are always serious from his perspective, and he always considers them with respect to what he holds truly important, or tries to. He does some amazingly stupid things, but also some amazingly brave things.
But Shautieh isn't the only excellent character. The uneccentric ones can't be described by a sound byte, but they constantly show up in the story, and speak their mind or hold conversations and react to events and make decisions in ways that allow the reader to see their development. As for the eccentric ones... let's just say they cover a variety of unusual people with unusual personalities and histories. You'll love them once you meet them, anyway.
The drama aspect of the series consists of the very dynamic actions of people who strives to fulfill their promises or personal objectives and so act in conflict or concert with other another, who develop relationships and meet/part by fate. The main plot devices which allows such depth of plot is the money, fame, and social circles which center around the professional sport of bowling. On one side of the equation, there's crime and the corrupt elite and people motivated by uncivil desires, and on the other side, there are those who push themselves forward amidst hardship for love or friendship or family or who have suffered misfortune but strive to overcome it. Of course, there are never any hard lines drawn. By the way, the romance is actually some of the best I've read (you can't see the form of its development until you're many volumes in, however).
I never know what to expect from this series in terms of wider plot structure, and rarely in terms of short plot arcs like say a 6-chapter elimination match. I care about the characters and their relationships with one another and have my own opinions about what developments I want to occur. The humor is brilliant. Overall, it really entertains me. And around volume 12/13 the story came to a point where it started to diverge a whole lot, and there have been many interesting developments, so I brightly anticipate the story's future. The scanlations are into volume 14 as I write this, but the manga (mahhua actually) is itself already on volume 23 and still not done yet, so I know I have a lot of look forward to.