I've found Sisko in angry mode can be used an awful lot when you decide to end an argument:
"LISTEN TO ME, if you have something to say to me... SAY IT" very important to over-pronounce every word
"DAMMIT! If you were still a man...!" (Pretty sure that can land you in trouble though)
"You...are...PATHETIC!" and "You have a TALENT for PICKing the LOSing SIDE!"
"Nobody touches my peppers!"
"KAPLEEEE" (in Emissary) I found out after about 14 years that he's actually shouting "HELP MEEEE", and that the Bolian dude isn't actually called Kaplee
Non Siskoisms, there's always a situation to slip one of these in a conversation:
"FOR CARDASSIAAAAAA" crops up an awful lot in my day, though I'm not sure why.
"DEATH TO THE ENEMY" (Worf - Take Me Out To The Holosuite)
"Hew-mons

"
"Well why don't you fix it, dear fellow, dear fellow, well why don't you fix, BEFORE I GO MAD?! hm-hm, hm-hm?"
"That's a stoopid question."
End every sentence with Dukat's "I vow this with my life's blood!"
One I've found for getting out of conversations that are boring or awkward: "WHOOSH! ... I'm invisible!"