I personally really really love "The Parliament Of Dreams". The multitude of various religious demonstrations helps to flesh out several of the alien races, we have the fun of a G'Kar centric plot, and we get introduced to the wonderous Na'Toth!
The various alien religious demonstrations was fun. We get more of the calm, monkishness of the Minbari religious experience. I love the minor interaction of G'Kar in the background during the shot of Delenn speaking right after the red fruit is passed out but not yet consumed: G'Kar quietly swaps fruit with Ivanova sitting next to him.
The Centauri festival was great too: "Everybody's cute, everybody's cute; but in purple, I'm stunning!" and "Do you know what the last Xon said? Argh!"
And then the poiniency of Sinclair's introduction to the long line of various religious persons from Earth culture.
Second, we have the joy of seeing more of G'Kar beyond the brooding angry revolutionary. I think a lot of G'Kar in this episode is hillarious: "This is Ambassador G'Kar's quarters. This is Ambassador G'Kar's table. This is Ambassador G'Kar's dinner. What part of this progression eludes you?" "By this time, I'm already dead.""Good riddance."
And then the wonderful introduction of Na'Toth after the suspicious death of Ko'Dath in an airlock malfuction.
I loved Na'Toth and G'Kar's repetition of the "You will known pain, You will know fear, And then you will die, Have a pleasant flight!" That whole conversation with Tu'Pari is great. I love Brown's delivery of Na'Toth's line: "Most unfortunate!"
Ultimately, I think this episode is great.