Looking good.

I wonder who all the folks are in that group photo (i.e. the one at the top, not The Band with Rocks In)...
Back row: the soon-to-be-in-a-scorpion-pit mime, Sgt Detritus, Coalface (?), Chrysoprase, ???, Diamond King of Trolls (?), Dr Whiteface.
2nd back row: Nijel the Destroyer (note the sword), Moist von Lipwig, Adorabelle Dearheart, Cohen the Barbarian, Fred Colon, Sam Vimes, Magrat Garlick, ???, Otto Chriek, Verence II, Granny Weatherwax, Casanunda, Nanny Ogg & Greebo, Ponder Stibbons, the Dean, Ridcully, Lord Vetinari, Rincewind, Leonard of Quirm, Mort, DEATH, Ysabell, Susan Sto Helit, Lord Downey, Albert, Carrot, ??? (just under Carrot), Angua, Umm... Angua's brother (i.e. Andrei the Yennork?), Lu-Tze, Reg Shoe.
Front row: Gimlet, Wuffles (?), Nobby, Your Armpit, one of the goblins (not sure which), Tiffany, The Librarian, The Luggage, Twoflower, Cheery Littlebottom, nameless dog (?), Igor, and another dwarf that looks like Your Armpit.
Even Fronter than the Front Row (but obscured by the guardian, darn it!: Hamish and Morag, Errol the dragon, another dragon (difficult to make out), Death of Rats (next to the Librarian), The Amazing Maurice and assorted rodentia.
How did I do?

Can you recognise anyone else?
