The song Spirit in the Sky was sung by Norman Greenbaum and released in 1969. I like the lyrics and I think this is a nice video.
I was reminded of this song when it played at the end of the movie Sunshine Cleaning, a movie from 2008 starring Amy Adams, Emily Blunt and Alan Arkin. It's about two sisters who start a crime scene clean-up business. It's a good movie worth checking out.