To me a Czar was always a Russian term for leader, which meant:

• a male monarch or emperor (especially of Russia prior to 1917)
• a person having great power
  wordnetweb.princeton.edu/perl/webwn
• Tsar or czar (Bulgarian ???, , ???, in Serbian: ??? / car, in scientific transliteration respectively car’ and car), occasionally spelled …
  en.wikipedia.org/wiki/Czar
• A Slavic emperor (not necessarily a Russian emperor); A high-rank political official of the executive branch: “drug czar”
  en.wiktionary.org/wiki/czar

A List of Obama’s Czars…..So far….

1. Herbert Allison Jr., bailout czar, [replaced Bush bailout czar Neel Kashkari, Assistant Secretary of the Treasury for Financial Stabilityconfirmed by Senate]

2. Alan Bersin, border czar

3. Dennis Blair, intelligence czar [Director of National Intelligence, a Senate confirmed position]

4. John Brennan, counterterrorism czar

5. Carol Browner, energy czar

6. Adolfo Carrion, urban affairs czar

7. Ashton Carter, weapons czar [actually Under Secretary of Defense for Acquisition, Technology, and Logistics and so subject to Senate confirmation]

8. Aneesh Chopra, technology czar

9. Jeffrey Crowley, [openly gay white man] AIDS czar

10. Cameron Davis, Great Lakes czar

11. Nancy-Ann DeParle, health czar

12. Earl Devaney, stimulus oversight czar

13. Joshua DuBois, religion czar, aka God czar

14. Arne Duncan, education czar

15. Kenneth Feinberg, pay czar

16. Daniel Fried, Guantanamo closure czar

17. J. Scott Gration, Sudan czar

18. Melissa Hathaway, [soon to be] cybersecurity czar

19. David J. Hayes, water czar [a Deputy Interior Secretary and therefore subject to Senate oversight]

20. Richard Holbrooke, Afghanistan-Pakistan (Af-Pak) czar

21. John Holdren, science czar

22. Kevin Jennings, safe schools czar [nominated to be Assistant Deputy Secretary of Education, Office of Safe and Drug Free Schools, a newly created post; openly gay founder of an organization dedicated to promoting pro-homosexual clubs and curricula in public schools]

23. Van Jones, green jobs czar

24. Gil Kerlikowske, drug czar

25. Ron Kirk, trade czar

26. Vivek Kundra, infotech czar [Shoplifted four shirts, worth $33.50 each, from J.C. Penney in 1996 (source)]

27. Douglas Lute, war czar [retained from Bush administration, married to Jane Holl Lute, currently a Deputy Secretary of Homeland Security]

28. George Mitchell, Mideast peace czar

29. Ed Montgomery, car czar [replacing Steve Rattner, who stepped down amid controversy over his former firm’s role in a possible kickback scandal]

30. Lynn Rosenthal, domestic violence czar

31. Dennis Ross, Mideast policy czar

32. Gary Samore, weapons of mass destruction czar

33. Todd Stern, climate change czar

34. Cass Sunstein, regulatory czar

35. Larry Summers, economic czar

36. Michael Taylor, food czar

37. Arturo Valenzuela, Latin-American czar (nominee) [although this post is referred to as a czar, he is nominated to be Assistant Secretary of State for Western Hemisphere Affairs and so is subject to Senate confirmation]

38. Paul Volcker, economic czar number two

39. Elizabeth Warren, TARP czar [chair of the Congressional Oversight Panel for the Trouble Assets Relief Program; note that Herb Allison is more frequently called the TARP czar]

40. Jeffrey Zients, government performance czar [replaced original nominee Nancy Killefer who withdrew her name after issues with her personal income tax filings surfaced]

Positions established but not yet filled:

41. behavioral science czar

42. copyright czar

Positions being planned:

1. income redistribution czar
2. land-use czar
3. consumer financial protection czar, aka mortgage czar
4. radio-internet fairness czar
5. student loan czar, to oversee a program of mandatory service in return for college money
6. voter list czar
7. zoning czar