So what are your favorite themes currently?
Not so much favorite but themes that caught my eye because they are different. For instance:
Unfortunately I have to go to DeviantArt to see themes like this.
What I am mostly complaining about is lack of diversity. And these are different.
One of my all time favorites, because it shows imagination and, in part, what can be accomplished if you use what is unique to Winstep applications (he uses dock overlays, vertical menu title bars, transparency, and is extremely original), is Burt Porter's Paint On Glass. This is an oldie but goody:
But my favorite is, without a doubt, Tiggz KTEK4D theme: