What hard to find CG series would you love to have sketches from?

i'm torn between TUYBW and xxxHolic. (i'm always looking for TUYBW sketches, but i haven't seen anything for sale in almost 2-3 years now.)

how about you?

I wish more sketches from Sasami: Magical Girl Club would show up. At one point they were fairly common, but about a year ago they all dried up. There must be more out there. Beside that, certainly xxxHolic is a top pick, but actually Angelic Layer sketches have never been common either, especially ones from the fight sequences. And Princess Tutu I need not say...

TUYBW? Oh, "This Ugly Yet Beautiful World"!

Continues to wander through the catacombs...

Avatar the last airbender.

Ahh so many..
I'd have to say DN, Claymore, Dennou Coil, and
Ghost Hound. All (except one) are Madhouse production which means they were most likely torched and dont exist except for the few that may have gotten away.

Alex Rowe from Last Exile! S-CRY-ed! :)
Was Midori Days CG? I would love a ton of sketches or cels from that one!
Mirage of Blaze!