One of my favourite Artists from DeviantArt She is originally from Lithiuania, but currently living and studying in London. You can find her dark, but often whimsical work at Natalie Shau and blueblack.
Another awesome artist whose work has graced the pages of many Ballistic Publishing books and whose work sets a high standard for others to work towards. You can find his personal portal at Ethereality.
Artpad, his personal portal.
Rafi Adrian Zulkarnain
RAZ artWorks! for more examples.