Cheapest oil change?

I had to swing into a Jiffy Lube this morning because I have to drive 3 hours today and I got swamped and couldn't yesterday, it was the only thing open, and it was $136 (6.4 quarts synthetic)

That just seems so high nowadays, does anyone have any recommendations for places that are a bit easier on the wallet?

Edit: damn, you are all awesome. I'll eventually try to get to changing it myself, but there are so many good recommendations here, I'll go through them all. Thank you!