Mmm... sort of a misleading poll. Do you mean the game, the franchise, the anime, etc?
The only thing good about it are the games (not the side-crap games, but the games that have the horribly generic colour or gem after the name). Those games are entertaining. The anime is lame (very little of ANYTHING that makes a good anime, ongoing story, character development, twists, action, etc.) the card game (now that I look back on when I used to play it) was bad, even though I invested a terrible amount of money on them and, well, I would never buy the clothing, plushies, knick-knacks, etc.
The games are good (well, most of them), and I'll play them (heck, even thinking of buying the new diamond and pearl), but everything else has more cheese than... well...
http://www.comedycentral.com/press/imag ... yPoofs.jpg
Edit - Oh, and I chose pie.