Half of those announcements are the Aviation equivalent of an urban myth.
Jetstar tried non-allocated seating for a couple of years, and let me tell you it was one of the most unpleasant things you can deal with. Also refererred to as the "Olympic system", as the first person there gets the best seat.
The problem with comedy on a commercial flight is that unfortunately some punters see it as unprofessional. Shdes is right, VB used to be alot like that, but over the years has evolved into a more...... well, professional outlook.For good or bad, who knows.
Funky paint job, but being a 737 NG it'll be covered in hydraulic leaks sooner rather than later!