Only 2 rules, the song literally has to be stuck in your head right now, not just a song ya like, and it has to be found on this site, or on YouTube, so that you can link to it and we can all give it a listen. 
All American Rejects - Gives You Hell
I happen to love this song, I'm not breaking the rules though, it's literally playing over and over in my head, maybe if I stop playing it over and over again in my car, that might help...
maybe if I stop playing it over and over again in my car, that might help...
I have a habit of doing that too, when I get into a song, especially a new one to me, I'll loop the d@mn thing all day long until I'm downright sick of it. Until the next day ... 
Ya this is a great song! I like to listen to it while I'm jogging infact I just got back and it's stuck in my head 
Blind Melon - Soul One
I tend to have various Blind Melon songs almost always in my head at some point each day,
.
White Stripes - Bound To Pack It Up
My Sweet Song- Toby Lightman
Wow, nice. I've never heard that one before. It seems like you have an "old soul", like me, according to your taste in music.
(I can already hear the 'old' jokes being clicked across the keyboard ...
)
that's what i've been told "old soul". and soon to be an "old person" too. 
as of now i'm the baby on the site... 
that'll change soon i'm sure...

Olympus
Single & Not Looking
Soundgarden - The Day I Tried to Live
Stuck in my head allll d@mn day,
.