1. "Radar Love" by Golden Earring. The perfect driving song, it's also a song that really makes you feel good when you're walking down 34th Street on a sunny day that's also your 39th birthday. Okay, not a universally applicable experience, but still....
2. "Champagne and Reefer" by the Rolling Stones & Buddy Guy. From Shine a Light, which I just saw last week, and fucking loved. The whole movie was worth it for this buzzsaw of a song.
3. "Pavane" by Jethro Tull. A simply magnificent arrangement of Gabriel Fauré's classical piece, I have three different versions of this -- one by Tull on their 2003 Christmas album, one by Ian Anderson live backed by an orchestra, and one by Tull live from the Montreux Jazz Festival -- each of which has its own unique flavor.
4. "Coming Into Los Angeles" by Arlo Guthrie. This is my current shower song, to wit, the song I blare in the shower when I do so home alone. (Previous entrants have included "Fire on the Bayou" by Jim Byrnes, "Solid Rock" by Bob Dylan, "Catalyst" by the Randy Bandits, among many others.)
5. "St. James Infirmary" by various. I've been collecting versions of this song, inspired by Arlo Guthrie's versions on both Live at Sydney and In Times Like These (the latter backed by an orchestra), and I now have eight versions of it -- besides the aforementioned two, renditions by Cab Calloway, Cisco Houston, Dr. John, Louis Armstrong, Ramblin' Jack Elliott, and Bob French's Original Tuxedo Jazz Band with Leon "Kid Chocolate" Brown. Just a wonderful old Western tune....
6. "Someday the Sun Won't Shine for You" by Jethro Tull. I have five different versions of this, from the 1968 original studio recording, to a 1991 rerecording, to live versions from 1992, 2002, and 2003. Each one kicks ass in its own special way, though I'm becoming partial to the 2003 version that adds Andy Giddings's stellar blues piano to the mix, which none of the others have.
7. "Tango Till They're Sore" by Tom Waits. Never fails to put a spring in my step. I just adore this song.