The first one is a guy I work with at Target. Yep. His hair is that long... longer in real life I think :P
The thorny flower looking thing is a thistle. I did my best to draw it from memory, Mostly I was trying out my new colored pencils that I got for my birthday. They're awesome!
The last one wasn't so much a drawing as a study.. Basically I just watched people walk around and drew their "action line", shoulder, and waist line. My friend Marla told me about a professor of hers that made her fill an entire sketchbook of these little guys, so I thought I'd try it out. :P