Joseph Kerr said:
Don't you dare lump me in with that hack job of a psychiatrist. He's nothing more than a two bit villain who can't do shit unless his victims are peeing their pants. I'll accept association with the other two on sheer principle. Both know how to have a good time when it really comes down to it.
I don't recall the Joker talking people into committing suicide with words alone. Then terrifying the entire prison of Arkham, before walking out after convincing two guards it was for the best. He also managed to screw so hard with Batman it almost cost Robin his life, which was fantastic. He threw away all the things that Batman knew about him, and truly scared Gotham. I will find you the comic number... Detective Comics 835 and 836.
It gave the Scarecrow a new level of respect, most the inmates told them not to bring him back. Some of the scariest people in the joint. Quite frankly it was freaking awesome.
The spotlight is always on the Joker. He is a great villain, but for me he suffers from over exposure. He is the main 'guy' all the time that he starts to get boring. He is going to appear, threaten Gotham... but not because he hates Gotham, he does it because he hates Batman (but not really). He just wants to lure Batman out for some sorry sense of meaning in his life.
Last time Batman died, the Joker quit. He got plastic surgery, and got himself a home. He just lived like a normal person. The moment he found out this was false, he jumped right back into the gig. Without Batman, the Joker is meaningless. He can't function.
EDIT: I love the dynamics of the Joker, he is a fantastic character. Few can argue this, but I do appreciate the attention some characters have gotten in recent times.