Ari gets a couple in "Give A Little Bit"— first is his speech to his wife justifying the use of her trust-fund money to buy out Terrance McQuiewick's agency, second is his...unique method of firing people after the deal goes through (which also counts as a Crowning Moment of Funny).
Seth Green's continued provocation of Eric regarding his past "relationship" with Eric's girlfriend Sloane has lead to him getting his ass kicked, as well as his entourage by proxy - when a member of Seth's entourage stepped between Eric & Seth so he could continue to talk trash whilst hiding behind his buddy, an already pissed off Drama turns up, floors the guy between Eric & Seth with one punch, leading to Eric, Drama & Turtle brawling with Seth & his entourage. Taken to Crowning Moment of Funny, with Ari's sarcastic remark to Vince & Vince's reaction.
Ari: This oughta be good for your image, Vince
Vince just shrugs
Drama's speech at the end of season 6, prior to his audition for the new Melrose Place.
Drama: For a minute, I thought I didn't want this anymore. But then it hit me, what I don't want anymore is the rejection - eighteen years of it has taken it's toll. I was on this show once before... And I was on another series for the past eighty seven episodes; I've done over a hundred & forty guest spots on T.V. & movies; Sixteen plays, thirty nine commercials... Yet still you haven't seen enough to just offer me the part... Still you make me sing for my supper.
Producer: Well, if you don't want to-
Drama: No. It doesn't matter if I want to, I have to.
Phil Yagoda: There you go Johnny, that's the spirit. Roll it.
"Ari Gold is back" scene, kicking asses terminator-style with a paintball gun.