Tcsjrbigfoot on youtube posted this video of himself and a colleague out bigfooting in the Ohio woods. When his partner makes a call, he puts everything he has into it. So much so after he's done he has to drop to his knees to keep from passing out! That's some sasquatch dedication.
Oh yeah, if you listen closely right around the 1 minute mark, you might hear a possible bigfoot vocalization. I heard something, but I'm not sure what it is.