TMZ Live 12/04/12: Katt Williams' Victim -- The Mystery Pink Slip

That Target employee who got slapped by Katt Williams just got FIRED! Dude didn't even fight back ... so why'd he get fired? Plus, Nick Lachey's dust-up with a Chargers fan was caught on video ... and now the alleged victim -- who claims Nick actually choked him -- is joining us. We'll find out who really instigated the confrontation. And, T.I. is in the newsroom! We're talking new music, rappers faking street cred, and ... Lindsay Lohan?? We'll explain.