How can I copy and paste multiple texts?

I would like to copy several different texts/things at the same time and paste them in any order.

Does anyone know any good Mac OS X software or plugin that can handle multiple copy/paste?

Check this: http://jumpcut.sourceforge.net/

Cited from the above:

Jumpcut is an application that provides "clipboard buffering" — that is, access to text that you've cut or copied, even if you've subsequently cut or copied something else. The goal of Jumpcut's interface is to provide quick, natural, intuitive access to your clipboard's history.

Several app launchers also have clipboard history functionality built-in. I personally use LaunchBar, which supports clipboard history for up to 40 items. I previously used Quicksilver before development ceased - though I understand it's now back in development.