Do some pros "over do it" just because they are on tv?

[Spuddy]

Lets take for example, Phil Hellmuth and Phil Laak.....

They're crazy antics and outrageous childish behaviours make for some great television..... but what do you think is their reasoning behind this behaviour?

Is it just to give a table image of "this guy is nuts"...... or do you think they are just playing to the cameras to make good tv? Or is it something else?