Saw one the other day. CLT to TPA on US Airways.
In terminal beside the gate a guy arrived just before boarding had started and made his way to the desk at front had a chat with GA and then started gesturing to someone at back to join him. Just then they announced boarding for First class and folks stated moving forward. Then a middle aged lady started pushing through the line to get to front to join the guy.
We then went down the air bridge to have to wait whilst the guy had a discussion with the FA beside seat 1C. The couple eventually settled down in 1A and 1C and the rest of us boarded into First followed by coach.
Half way through boarding a young mother arrived with 2 children with seating assigned in 1C, 1D and 1F. The guy then rather stupidly asked the mother to take his seat by the window in row 3 so he could sit together with his wife.
Clearly, this was not going to happen and the guy moved back to row 3 muttering about having to sit apart, then asked the lady in 3D to swap with his wife in 1C. The lady told him no way was she going to swap to sit beside a young kid on 2 years age.
On arrival, he then pushed passed folks to get to his baggage stowed in the locker above row 1. Unfortunately, he forgot his manners and just barged past folks without a please or excuse me.
Some folks have some sense of entitlement, I guess!