Just because not even Ioan Gruffudd could draw me to watch the movie about the creation of this song, it doesn't mean that I love it any less. If there were anything that could tempt me to religion, a song like this would be it, but it appears to have not, so there goes that.
This classic hymn, which was penned by John Newton after witnessing the atrocities of the slave trade and his subsequent Christian awakening (just to spare you a viewing of the movie if you're as disinterested as I was) has so many great renditions, I'm sure I'll fail at naming all the praise-worthy ones, but here are at least some of my favorites: Willie Nelson and Friends (live); Elvis Presley; and Loretta Lynn.
But what do you think?