Say a final farewell to Robert Chambers, the man who ensured E! Channel-level publicity in perpetuity for Upper East Side Irish pub Dorrian's Red Hand, which is the last place his former ladyfriend was seen alive in 1986. Like so many preppy misfits and high-profile morons before him, dude just couldn't stick to his first two crimes (that would be murder and, in 2004, just after he was released from prison, possession and driving on a suspended license). Chambers and his girlfriend (this one was still alive!) sold more than a half-pound of cocaine out of their E. 57th Street apartment to undercover agents in recent months, who popped the two of them yesterday.