fonts

hey guys.
can any one tell me some free fonts download sites?, been googling but all i find are pay sites. also, i bought a mac laptop, but im new to anything mac, so do font files work on it fine? or i have to use special types of font files for it?

http://www.dafont.com/
ftw

Unlike most font sites where the fonts are only sorted by name, this site also has them sorted by themes.