1. I love when people think they see a celebrity on board, so they start discreetly taking pictures on their cell phone. Just because that person happens to have curly red hair and has snowboarding equipment doesn't mean he is Shaun White. Seriously, it was not him and you just look like a creepy stalker.
2. Why would anyone take their shoes off and walk around on a dirty carpet that probably hasn't been cleaned since the plane was built? I see this happen almost every flight. Passengers want to be comfortable, I get it. However, you need to keep yourself somewhat protected from germs. Some passengers will even walk into the lavatory with their bare feet, if you can believe that! It is just plain unsanitary.