Akira Toriyama's Dragon Ball shouldn't even be worth reviewing at this point. Nearly everybody is familiar with the story, the characters, the ridiculous battle scenes, the even more ridiculous haircuts. But I think there are some overlooked aspects of the series that are still worth talking about.
A favorite of mine (and many others) growing up, with hindsight it is easy to point out the flaws in Toriyama's manga. The plotting in the later volumes is the most prominent, as characters get stronger and stronger with seemingly no limit, and bad guys just keep on coming (this guy is the strongest in the universe. Wait, no I lied, THIS guy is the strongest in the universe. Now go train for a day, come back with a new technique, and kick the crap out of him.)
Alas, though these flaws are glaring, I am willing to overlook them for the sheer joy this manga has brought me over the years. Toriyama crafts an interesting world with memorable characters who the reader genuinely grows to care about. From the series' beginnings as a whimsical fantasy adventure, to its gradual shift in focus to larger-than-life martial arts battles, Toriyama has always kept a good sense of pace. It's a manga where you start reading and you just don't want to stop, regardless of how many times you've experienced the story before. And through re-reading, I've noticed several subtleties that Toriyama injects that help the series aspire to something a little deeper (for example, the complex father-son-caretaker relationshiip of Goku, Gohan and Piccolo, and the gradual, not immediate, redemption of several supposedly irredeemably evil characters).
Though the manga is not perfect by any means, and the last couple arcs produce some truly cringe-worthy moments, it never stops being enjoyable, and actually contains some deeper aspects that push it above the average shounen manga. I will be re-reading this series for the rest of my life, and each time I will enjoy it just as much as the last.