IMO the best way to find new fonts is to use the collective mind of the worlds designers, tap into them by searching on google. Search for something like “professional fonts”. If I want to make sure I find new stuff I would add “professional fonts + 2009″. You can use any modifier (i.e. Grunge, Clean, Sketchy, Script)  and come across a giant pile of blogs hawking their favorite fonts.

Here are a few that I found.

The best web designers and their favorite fonts

21 fonts that shouldn’t be free but are

20 amazing fonts a designer must have

80 beautiful fonts for professional design

50 awesome fonts for professional design

These folks usually find their fonts in font repositories like these. fontsquirrel is probably my favorite.

fontsquirrel

dafont

fonts.com

If you want some amazing fonts that few people have, your going to have to pay for it. Here are 3 of my favorite paid font sites. I can’t stay on these sites for long, because the drool tends to drip and short out my keyboard.

MyFonts.com

Veer

House Industries