I have to agree with the jeans w/running shoes being a bad look. Not just a bad look... a REALLY bad look. Nothing preppy or athletic about it. Running shoes go with running gear, period.
I'm mixed on the tie with jeans look. Looks ok on some guys for casual wear, I don't think I could pull it off though.
I don't like the skin-tight skinny jeans look on guys. Jeans should be form-fitting but also comfortable.