For me at the moment its “Go All The Way” by The Raspberries for reasons unknown - I can’t even remember the last time I heard that song.
Give Peace A Chance - John Lennon
I was walking by the campus radio station today and they were playing it. I just heard a bit of it but it’s been in my head all day.
“Christmas Time is Here” – a little bit of it was just played on The Colbert Report.
Damn him! 
“Where Da Hood At”, sung to the tune of “Karma Chameleon”.
Damn commercial.
“Fountain of Salmacis” by Genesis. 
“The Internet is for Porn.” Not sure who sings it, I keep forgetting the name, but someone pointed me at a WoW video using this song. I’ve had horny tauren dancing in my head all day.
I thought I had finally gotten it out, but I am still running Jimi Hendrix’s “Foxy Lady” through my head. Then again, it probably doesn’t help that I just finished watching Wayne’s World.
(Side note: There, I posted)
For some ungodly (or more accurately I suppose, Godly) reason, I keep humming or thinking of Heaven On Their Minds from Jesus Christ Superstar, usually paired with the later Last Supper refrain, with the disciples of Christ singing a sort of drinking song:
I guess it beats Donovan’s Atlantis, which was the last thing that got stuck in my head for weeks on end.
Earlier today it was “Tommorow” from Annie.
Darn coworker!
Me too!!!
na na na na na na na na where’s the hoo-ood at. . . ?
Good Golly Miss Molly - Little Richard
:: sure like to ball ::
“glory to god” from handels messiah
Watusi Rodeo by **Guadalcanal Diary
**
“…warriors standing with spears in their hands,
wondering what’s next from the crazy whiteman…”
Grieg’s The Last Spring
The Unsung War—From Ace Combat 5
I’ve never even played the game.
Rebel Rebel - David Bowie
I just got back from a party where they played that song, plus I spent the evening telling anyone who asked that I had bought my dress at a store called Rebel Rebel.
Sounds like a fun party. I assume my invite got lost in the mail?
Everyone Else Has Had More Sex Than Me.
I dunno who sings it. I didn’t even know it was a real song - I had only seen it in the flash animation that had the dejected bunny singing it. But there was just a commercial for one of those compilation CDs - Like Now 40,208 or something - and that was one of the clips that played.
So now it’s in my head.
It’s been alternating all day, between these:
Shut Up, Bloodhound Gang:
“And I don’t give a damn if you don’t like me
'Cos I don’t like you 'cos you’re not like me”
Damn catchy. And this one:
William It Was Really Nothing, The Smiths:
"Wiiiiiiilllayum, William it wahahaaas, reheally nothing
Wiiiiiiiilllayum, Williaaaaaomaaaaahhhaahhhhaaaaaaaa haaaaaaa… haaaaa… ho-ooohhh…"
That’s some fone-etics for you. And then this last one, which has been in my head for over a week now:
*When Will We Be Married * - by whoever, it’s a song we used to sing back home, I am assuming it’s an old folk song of some sort, possibly Irish:
"*Oh, ye have yer eye on Jimmy
Long Jimmy Lee
Ye have yer eye on Jimmy and a fine man is he
Ye have your eye on Jimmy
But ye better let him be
'Cos when you go, Molly-O,
you’ll be gone with me
When will we be married Molly
When will we be wed
When will we be bedded in the same bed*"
[repeat]
Best sung while smashed, and heavily slurred with a barely discernible tune. It sounds like the world’s greatest song ever that way.
“Meet on the Ledge”…Fairport Convention
For those interested in an eraser song, "Jimmy Crackcorn" usually will erase the song in your head and not get stuck itself.