While I second "Hot Buttered Rum" and "Turning Toward the Morning" I tend to lean toward the funnier favorites. Si Kahn, in "Fresh Water Whaling" (I've never seen proof that he wrote this; if anyone knows yea or nay, I'd like to know--I love the song):

We didn't want to scare the whales, we muffled oars with care
Rowed out to the horizon, and we dropped our anchor there

And anything by Mark Graham.

Aloha,
Mark