Format your entries with Textile. Ported from Rick Ellis' EE 1x version by F. Albrecht and hosted here for sharing etc.
Copy the textile directory to system/expressionengine/third_party/.
{exp:textile}
stuff...
{/exp: textile}
Goes well with the Textile Editor Helper.
- Rick Ellis for Textile EE 1.x version
- F. Albrecht for porting it to EE 2.x