A few observations after having returned from a meeting:
1) As someone in line before me found out, belligerently demanding airport security rush you through the screening process because you're late for your flight, and then becoming abusive when security politely informs you that you have to go through the same process as everyone else, is guaranteed to get you "special" treatment. And make you miss your flight.
2) There is an inverse correlation between the amount you pay for a hotel room and the chances of the stopper in the bathroom sink working.
3) The odds of the movie shown on my cross-country flight being watchable are slim to none.
4) The odds of the person sitting next to me on a cross-country flight having some hygiene issues are quite high.
5) Really bad talks get discussed far more than decent, but not quite kick-ass, talks. But not in a good way. The postdoc who gave a talk that very clearly demonstrated that he didn't know or understand basic physical properties of the kind we expect undergrads to know will be remembered for some time.
6) Not knowing how to set up, run and/or analyze experiments is not an impediment to giving a talk at a large meeting based on said experiments (n >> 10). And this is not correlated with career stage (student vs. postdoc vs. PI).
7) The best airport in the world is the one you land at at the end of your trip.