Let's go right to the horse's mouth--the Emmy rules:
Source:
http://www.emmys.org/downloads/2008/pte60_rulesandproced.pdfCategory 66 OUTSTANDING HOST FOR A REALITY OR REALITY-COMPETITION PROGRAM
Emmy to hosts and co-hosts. The host or co-hosts must be so titled in the credits. The category is for the proactive “master of ceremony” host and does not include reactive participants (game players) or judges. Eligibility is open to the host(s) of programs entered in the following categories:
Category 77 Reality Program
Category 78 Reality-Competition Program
DVD REQUIREMENTS FOR CATEGORIES 65 AND 66: At the point of nomination (July 17), variety-music performers and hosts for reality and reality-competition programs will have to submit two DVDs that are edited down to the performer's appearances only. If the performer or host appears in the majority of the program, the DVDs can be the complete program or episode.
(That answers my question: Since the credit on "Dancing" says "hosted by Tom Bergeron/Samantha Boo--uh, Harris," they must enter joint. It's only if the credit gets changed to "Starring Tom Bergeron, With Samantha Harris" that Tom can enter by himself [which I bet is how Brucie is credited in the UK], but Tom's too nice a guy to make that request. Also, Seacrest and Howie can go up against Penn and Teller, Mike Rowe, the "Mythbusters" guys or Ira Glass.)
Category 77 OUTSTANDING REALITY PROGRAM
Emmy(s) to producers whose screen credit is Executive Producer, Co-Executive Producer, Supervising Producer, Producer, Produced by, Senior Producer, Series Producer, and whose functions support those credits. (Entries are limited to a maximum of 10 entrants.)
Please note: The host is no longer eligible in this category. Please see category 66 for host eligibility.
For a series (minimum of three episodes) or a special Reality Program generally includes programs in which the premise, circumstances or situations are manipulated for the purpose of creating the program, unscripted reality programs, and docu-soaps.
The area excludes all game shows or any program that gives a prize or is itself a contest and/or competition.
Synopsis: Producers must provide a synopsis of 50 words or less. For series, please provide a synopsis that describes the complete series.
Category 78 OUTSTANDING REALITY-COMPETITION PROGRAM
Emmy(s) to producers whose screen credit is Executive Producer, Co-Executive Producer, Supervising Producer, Producer, Produced by, Senior Producer, Series Producer, and whose functions support those credits. (Entries are limited to a maximum of 16 entrants.)
Please note: The host is no longer eligible in this category. Please see category 66 for host eligibility.
For a series (minimum of three episodes) or a special
Synopsis: Producers must provide a synopsis of 50 words or less. For series, please provide a synopsis that describes the complete series.
Reality-Competition Program includes all game shows or any program that gives a prize or is itself a contest and/or competition.
------------------
I'm wondering if either the game show producers haven't bothered entering themselves in the past because they thought they wouldn't win--but they could.
And I bet the hosts will be making entries--in fact, I'll go ahead and predict the Reality-Competition Host nominees:
Jeff Foxworthy
Howie Mandel
Jeff Probst
Ryan Seacrest
Either Bergeron/Harris, Drew Carey ("TPIR MDS" or "Po10"--take your pick) or Phil Keoghan
The non-competition reality show hosts and Heidi Klum as possible longshots.