In case you aren't familiar with Entourage, Jeremy Piven, who celebrates his birthday today, plays the character of Ari Gold, the lovable, but deeply stressed agent of Vincent Chase.

Ari consistently looks like he is on the verge of a nervous breakdown but that of course leads to some great scenes and quotes over the course of the series.

Be warned, he's quite fond of swearing.

1. "Basic Humanity 101"

2. "Happiness can't buy money"

3. "Get the f**k out"

4. "We're f**ked"

5. "You're fired"

6. "Course you do"

7. Rusty c**t bucket!!