I don't think we're done with this story line. Why did Hector leave Chile? Why did the cartel consider him untouchable? (Don Eladio says to Gus, "The only reason you are alive and he is not is because I know who you are. But understand, you are not in Chile anymore.")

Was Gus involved in planning an assassination attempt on Pinochet? Was he one of those tortured by Pinochet and became famous for his revenge? (See this picture, where it seems several teeth are missing or misshapen.) Or was he a known Pinochet enforcer, giving orders as to who to arrest and torture? It had to be something where he was the brains, not the muscle, given his reaction to seeing his partner Maximilio killed. He seemed like someone who had never witnessed a murder before.

Back to what we do know. Instead of killing Gus, Hector (Tio), on orders from Don Eladio who is also sitting at the table, kills Gus' young business partner Maximilio whom he had saved from the slums of Chile and sent to the university to master chemistry. Hector insists Gus stare at Maximilio dead face.

Now we know how Gus could slit employee Victor's throat as a warning to his team while they watched on in horror. He learned it from Hector and Don Eladio.

Gus has been on operation payback for Maximilio ever since -- not just to kill them, but to destroy their business, take their place and emerge supreme.

Gus tells Hector in the nursing him when he gives him the details of his nephews' deaths, "Look at me." He won't. He also asks the crippled, drooling Hector, "Is today the day?" Receiving no answer, he says, "Maybe next time."

Gus has already gotten his revenge on Hector. He's incapacitated and unable to communicate except by ringing a bell. How easy would it be for Gus to have Mike finish him off. But Gus wouldn't want that. He wants to prolong Hector's suffering.

The stage has been set for the upcoming battle between Gus and Don Eladio. The writers seem to be planning for Gus to learn the timeless lesson: Revenge is a dish better served cold.

Predictions: Gus won't die, he's too important to the show. Jesse has the poison. Will he try to poison Gus but something goes terribly wrong? Don Eladio probably will die (maybe Jesse poisons him instead of Gus), but it will be a short-lived victory for Gus. I think Walt(with Jesse back in tow and a little unsuspecting help from his DEA agent brother-in-law Hank ) will team up with Don Eladio's successors and become Numero Uno. Walt won't meet his demise until next season, the show's last.

Some other takes on last night's show: mjl at Two Cents; AV Club's Hermanos; Digital Spy; and ShowTracker from the LA Times(who also makes a revenge served cold analogy.)