Make your Designs Better by having better fonts
One of the simplest ways to improve any design is by having a well designed font. Fontsquirrel.com is perhaps the best place I have seen to get fonts that are free for commercial use. This is definitely a site you will want to bookmark.
The site is clean and well design and makes it easy to browse for whatever font you need. Before you tackle your next design, hop on over to Font Squirrel to see if there is a font that will work for your design.