Well making a choose is difficult. Soooo much talent around here. But if I have to make one it would be for WindowBlinds:

Artist (Entire Portfolio): Essorant

Skin: GalCiv - By Treetog

None and none, but it's bound to be one of those ancient K-Jöfol skins.

hmmm...to have to make a choice...impossible to choose a favorite artist, they are all great.
Favorite skin is also a difficult choice, there are sooo many great skins, however I tend to use Lean Green for my everyday skin. It's easy on the eyes (and I have really lousy eyes).

I can see a thread full of 'Treetog' coming on, hehe.

and for my pick, well:
Treetog - Attacker for WB

Treetog and Essorant for WindowBlinds.
MobiusCo for 3D stuff.
Nuvem for art/wallpapers.
Ceeslans for Litestep. (honourable mention to Jafo, LS God!)
Me for QuickNotes.

BoXXi starts a campaign for a QuickNotes section on WinCusto!

I like Judge and APB is also good, Alexandries and adni makes great skin, the one i use now is Chad Ross's Unmitigated Orange xp, there is so many good once,

treetog Makinarama (although I've used most of his WB skins at some time or another)

Anything by Essorant.

And one skinner I miss is Shawn Murdock. Even though they are out of date, his Sigma skins are some of the most sylish WB skins I've ever seen.

old school here: BorgX by MorpheusX.
and i have to agree with crae, Misery´s K-Jofol skins have not been topped yet.

Listen to Moshi.
MorpheusX and Misery were so far ahead of their time that they still look like they could be next weeks new releases.

Fav artist(s): Dangeruss and Steve Moss
Fav skins: Winstep suite by Dangeruss and eIndia WinAmp skin by Steve Moss, old stuff but it still rocks my world
WP creators: Misery (who else?!?!) and Adni18

I am very sorry, but I can´t talk about just one favorite artist, I could wrote a really huge list here, containing a couple of dozen of 'favorite artists', so I will need to talk about at least 3 of them.

1- My dear friend and allways master and teatcher, Dangeruss, the person that introduced me into the skin suites world.

2- My lovely "pixxy" partner and best friend Alexandrie, who is not just a fantastic skinner, but also a great web designer and programer.

3- My Portuguese friend Nuvem, the best digital artist I know.

(no special order for the names above)

Regarding skins, the one that made me come to the skinning world was Capsula from Allen Bond , my all times favorite skin.

I use so many. I really like Davad's Seti green and I've been using his mud theme for WD for a while. It reminds me a lot of MetalX which is a favorite WB skin. UniverseMetal by Pixtudio is great as is Lunar Base. Ambient by Adni is really cool as well.

Some stuff by some skinners is wonderful, other things by the same author doesn't interest me as much. That's what's so great about skinning isn't it.

I have many, anything by treetog and/or Alexandrie. MetalX with grahaze is great. UniverseMetal is my fav right now. WB's- Logika,UniverseMetal,anile,Sage,LiteBlue,GalCiv and on and on.... I just get so into glass and metal...

Great work to all.

My favorite skin would be the Sputnik suite

As far as artist go well...let's see
Dangeruss, Pixtudio, Hippy, Essorant, Steve Moss, Honz12, Titan, and i like some stuff from Chad Ross too