I order all my frames online through www.americanframe.com. Easy interface (but it used to be easier before they changed it!). They also used to let you order small frames but no longer. However, the prices are still good so those are minor quibbles.
The picture at left and in the blog header is one I have not gotten around to framing yet. My reference material was a photo that a co-worker took while on vacation in China and it was the first picture I tackled in a weekend workshop in September. Desmond O'Hagan was the instructor. He was a great teacher. He worked on each person's painting as he demonstrated techniques so we all got to go home with a partial O'Hagan original!