Digimon: Digital Monsters is an English translated version of Digimon: Adventure, it's your typical imported Japanese anime from the late 90's about monsters and children. Critics have criticized it as being a pseudo version of Pokemon, Digimon however is far from being a rip-off it shares common aspects with more popular Pokemon such as children befriending the monsters, the monster evolve, the monsters battle etc. Unlike the lighthearted Pokemon however, Digimon is more of a classic tale of good and evil it's plot is completely different from that of Pokemon. I have seen other anime that follow what I call the Pokemon formula, Digimon is not one of them.
The Pokemon formula: A character aims to be great at something, goes on a quest, wins things, monsters come out of stuff to battle (cards, toys, balls, etc), usually involves some kind of monster tournament. Beyblade, Yu-Gi-Oh, Bakugan, and others follow this formula more than Digimon. If anything Digimon has more in common with science fiction anime's or Saturday morning American cartoons about action and adventure, than it does with the other monster anime.
The characters are not your typical one dimensional anime characters, all of the characters seem to have very distinctive personality's with interesting back stories that keep the viewer interested. Even some of the villains and Digimon themselves. The anime is a lighthearted tale of good and evil, with some mature themes mixed in such as losing your parents and death, the anime also teaches kids about teamwork, friendship, and the importance of working together. The anime has great plots and sub plots that are not to complex for children to follow, but are very well written and interesting.
The English version of Digimon is filled with cheesy puns and comedy to keep kids laughing, and a score composed of cheesy 90's early 00's pop rock to catch their ear. The English version also has some of the more intense scenes removed from the original Japanese version making it more appropriate for kids, without parents having to worry about Digimon being a bad influence on children or to dodge controversial Japanese anime stereotypes. For the older audience who may enjoy anime, the original Japanese version of Digimon Adventure, features a much more serious script (the dialog at times is usually completely different), a beautifully composed score made up of orchestra, electric synths, J- Rock and J-Pop, and features much more as a lot was cut out of the English dub to make it more suitable for western children and western audiences.