What amazed me is that "Bejeweled" has become an entire genre, like "platformer".
The original isn't just cloned, it becomes a foundation for larger games.
It's fun to think of games that create genres and those that don't: the "Tetris" genre never really caught on like the "Doom" genre or the "Bejeweled" genre. Yes, yes, there's Dr. Mario and a host of other clones, but I get the feeling that FPS and Match 3 are gonna be around a long, long time.