Comments in this thread at LGM, remind me of my favorite food axiom.
There are five kinds of bagels:
Bagels with seeds (poppy, sesame, or salt)
Bagels from the allium family (onion or garlic)
That's it. Anything else is a pastry. Blueberry - pastry. Cinnamon-raisin - pastry. Green chile bagel? - Not only is it a pastry, but it is an abomination against God and man ... and woman... and child.
The test is: would you put fish on it? If the answer is no, it's not a bagel.
UPDATE: RAF's Facebook discussants point out that I left salt off the list. In the past, I included salt in the "bagels with seeds" category since the salt is kind of like the poppy and sesame on the outside of the bagel. My tastes have changed over time (or it's harder to find Nova that isn't too salty) and thus I dropped salt from the list, but this is a personal preference. I have restored salt to it's proper place. I am interested in feedback on rye bagels.