Has anyone else seen this movie yet? Parts of it are very Planescapy, particularly the "Troll Market" scene, which is a wonderfully inspiring model for a market in Sigil. The unique portal the goblin smith opens and the climactic battle on the giant clockwork would be excellent Planescape set pieces as well.
It was an engaging movie, too. I liked it much better than the first one. It helped that they got rid of the "rookie" viewer-surrogate and concentrated on the freaks.
I saw it and enjoyed it. I hadn't thought about the Planescape parallels, but I agree. The Troll Market would be a good approximation of entering a bazaar in Sigil, but I would picture Sigil as bigger and more wide-open. The Troll Market seems more cramped, which isn't surprising for someplace underground. And yes, everything after the meeting with the goblin smith could be borrowed nearly wholesale and dropped into a Planescape adventure. Nice catch!