During a dial scan a few days ago, I heard a radio announcer say, "This conference features two great guests--and me."
I don't know if he was downplaying his moderator abilities or if he felt like the odd one out on a panel. Perhaps he contributed as much as the guests. Even so, it would have been off-putting to hear him refer to himself as "your excellent as always host" or "your most knowledgeable expert of all."
Sometimes, it's advisable to undersell--within reason.