Denethor
Denethor and Faramir stared dumbly- and glumly- at the giant spiderweb for a good five minutes before saying anything. And by "dumbly", I do not mean that they were stupid- although some have said that. No, I mean that they were silent. Mute.
Then, rather suddenly, Beregond came tearing into the control room.
"Lord Faramir! We've found it!"
"What?" said Denethor, shaken out his his reverie.
"The Spider, milord, we've found it!"
"No, I mean what do you mean talking to Faramir first?" said Denethor. "I am still the Lord and Steward of this city, am I not?"
"Er... yes... but it was Lord Faramir who ordered that we find the spider," explained Beregond.
"You did this without consulting me?" Denethor narrowed his eyes at Faramir.
"You were asleep, Father!"
"That's no excuse! Anyway, where is this spider?" Denethor turned back to Beregond.
"It's just around that outcropping of stone, sleeping!" said Faramir. "We would have tried to pre-emptively kill it, but we found ourselves shaking too hard to hold our weapons steady, so we fled- that is to say, we retreated, back to the city."
"I think I hear something," interrupted Faramir.
"What do you mean, you hear something?" said Denethor.
"Be quiet and listen!"
"Are you telling me to be quiet!" Denethor roared, but the noise that Denethor was hearing was suddenly a great deal louder, as though the volume had been turned up.
"Is that... music?" asked Faramir.
"It has a beat," said Denethor, "but I wouldn't call it music."
"Verily, milord," said Húrin, "that is known as music. I believe the younger generation calls it 'hip-hop'."
Even as they were discussing the "music", the spider clambered over the outcropping of rock, and into their view. It began to wiggle and shake in time with the music.
"What is that horrid spider up to?" asked Denethor in revulsion. "And look at it's size- it must be the offspring of Ungoliant herself!"
"I think it's dancing..." said Faramir.
"A Dancing Spawn of Ungoliant!" said Denethor, amazed. "Now I've seen everything."
"We're still no closer to getting out of here," pointed out Faramir. "And now the beast is awake."