What do/did you sing to your kids to get them to sleep? What do you like for yourself for the same?

I've been cycling through the same handful of songs, adding one or two with each of my kids. The rotation is pretty much:
"Hallelujah" (More Cohen than anyone else, when I sing it)
"When You Dream" (BNL)
"Salvation Is Created" (Chesnokov)
"You'll Be In My Heart" (Collins)
"Leaving On A Jet Plane" (Peter, Paul, & Mary)
"You Are My Sunshine"

Occasionally some others make it into the mix, but the kids usually request these ones, and I know 'em.

We've also found that Don Williams and George Strait work pretty well for rocking a baby to sleep.