WASHINGTON (CNN) -- The moderator's chair on NBC's "Meet the Press" stood empty on Sunday in remembrance of Tim Russert, the man who had occupied it for 17 years.

The moderator's chair on NBC's "Meet the Press" stood empty Sunday in remembrance of Tim Russert.

As the show's host, Russert became a mainstay of television journalism's political talk.

He died Friday of apparent heart attack, according to the network. He was 58. The network said Russert collapsed while at work.

Colleague and former NBC anchor Tom Brokaw, who broke the news about the anchor's death, spoke on Sunday the familiar first four words of the news program, "Our issues this Sunday." He noted that those were the same words Russert had been recording for the show when he collapsed and died.

"Our issue this sad Sunday morning is remembering and honoring our colleague and friend," Brokaw said.

"He said he was only the temporary custodian," of this program, which he called a national treasure, Brokaw said. "Of course, he was so much more than all that."

Brokaw sat among some of Russert's other colleagues in the front of the show's set, including Pulitzer Prize-winning author Doris Kearns Goodwin and political analysts Mary Matalin and James Carville, who is also a CNN contributor.

"This is where you separated the men from the boys," said Matalin, who is married to Carville. "You weren't a candidate until you came on this show."

A montage of clips from past years showed various politicians -- former President Bill Clinton, President Bush, former presidential candidate Ross Perot, Homeland Security Secretary Michael Chertoff -- sitting across the table from Russert. Watch politicians, journalists pay homage to Russert "

Answer this series of questions:

1. Who was the "Meet the Press" moderator?
2. On which network?
3. How long had he held that position?
4. Who broke the news of his death?
5. Were they colleagues?
6. How old was Russert?
7. What did he die of?
8. Where was he when he collapsed?
9. What day of the week did it happen?
10. What was he saying when he collapsed?
11. Were they the closing words of the broadcast?
12. Which Pulitzer-Prize winning author attended the memorial show?
13. Where did she sit?
14. Who sat in the moderator's chair?
15. Which day did this episode air?
16. Who called the program a national treasure?
17. DId he see himself as the permanent leader of the program?
18. What did the memorial montage show?
19. How many presidents had joined him?
20. Which ones?
1. Tim Russert
2. NBC
3. 17 years
4. Tom Brokaw
5. Yes
6. 58
7. a heart attack
8. at work
9. Friday
10. "Our issues this Sunday."
11. no
12. Doris Kearns Goodwin
13. in the front of the show's set
14. no one
15. Sunday
16. Tim Russert
17. No
18. various politicians sitting across the table from Russert
19. two
20. Presidents Clinton and Bush