These are some of my favorite WordPress Theme providors and themes.
Studio Press – Genesis
Surfarama
Virality
DIYThemes.com – Welcome to Thesis Themeā
OptimizePress
Columnist
Hueman
Thematic
ThemeShaper
TwentyTen
TwentyEleven
ClubMusic
Flexibility
Ultimate Blogging Theme
sympagrid
premiumresponsive
www.hongkiat.com
www.woothemes.com
themeforest.net