The clove hitch is a fast and easy knot that can be used by itself or to start some lashings; such as the square lashing used for bringing 2 poles or sticks together.
Caution: The Clove Hitch was, originally, included here with the intention of condemning it. It does have two giant faults: it slips and, paradoxically, can also bind. It should be deeply distrusted when used by itself. (from http://www.animatedknots.com/cloveend/index.php)