Watch the Phraseology Rhythm online guitar lesson by Jeff Scheetz from Blues-Rock: Secret Sauce
This rhythm is another good one to whip out at jam night. It's cool because again the pattern can be used heavy or clean. It could be played at a variety of different tempos - so you could do a half time version as a slow blues and then kick it up a couple notches to rock out.
Apply this trick to all of your rhythm patterns. You'll notice how different the same chords and patterns sound when you apply dynamics and effects.