The Bagel Shack. There are two locations, the original in San Clemente and a second one in Mission Viejo off of El Toro.  The bagels are big, toothsome, and fresh (due to their fast turnover.)  I would go so far as to say that these are the best bagels I have ever had West of the Hudson River (and East of The Dead Sea.)  I like that the bagels are shelved so that you can grab your own and quickly pay for them if you are not having them toasted or with cream cheese.  Go for the jalapeño bagels.