I think, for any catagory of game book you could think of a top 10 list for, you'll find at least one Planescape book in that list. In adventures, you'd find Dead Gods. In supplements, you'd find Factol's Manifesto and Faces of Sigil. In Adventure Anthologies you'd find The Great Modron March and Infinite Staircase. In the catagory of Lamest Book to Hit the Shelves Outside Some of AEG's Mini Books you'd find A Player's Primer to the Outlands (every setting has at least one flop, thankfully, PS had very few).
If I were just a player, Planescape probably wouldn't be my favorite campaign setting. But as a DM, I found the books themselves to actual be fun to read. There's very few game books that I sit down and read front to back (I have yet to read anything from WOTC at all like that). But the PS books (most of them anyway) were actually a joy to sit and wade through. They were some of the most story based books out there. While not neccessarily everyone's cup of Shemeshka's Poisoned Tea, for those that actually like to read their game books, the PS line was a godsend. Or goddessend. Or fiendsend. Or something like that.
Also on the top of the list, yet often neglected: The Blood War. To have the PCs walk through some unknown portal only to find ten thousand screaming fiends to the right and ten thousand screaming fiends to the left. Kinda puts your players on edge, doesn't it? Try getting a whole group of players in FR to make that *gulp* sound all at the same time.
If I were just a player, Planescape probably wouldn't be my favorite campaign setting. But as a DM, I found the books themselves to actual be fun to read. There's very few game books that I sit down and read front to back (I have yet to read anything from WOTC at all like that). But the PS books (most of them anyway) were actually a joy to sit and wade through. They were some of the most story based books out there. While not neccessarily everyone's cup of Shemeshka's Poisoned Tea, for those that actually like to read their game books, the PS line was a godsend. Or goddessend. Or fiendsend. Or something like that.
Also on the top of the list, yet often neglected: The Blood War. To have the PCs walk through some unknown portal only to find ten thousand screaming fiends to the right and ten thousand screaming fiends to the left. Kinda puts your players on edge, doesn't it? Try getting a whole group of players in FR to make that *gulp* sound all at the same time.