Maybe, just maybe,

if I post it, it will get out of my head: (but there is more after it):

"Eye of the Tiger" - Survivor

Risin' up, back on the street
Did my time, took my chances
Went the distance, now I'm back on my feet
Just a man and his will to survive

So many times, it happens too fast
You change your passion for glory
Don't lose your grip on the dreams of the past
You must fight just to keep them alive

Chorus:
It's the eye of the tiger, it's the cream of the fight
Risin' up to the challenge of our rival
And the last known survivor stalks his prey in the night
And he's watchin' us all in the eye of the tiger

Face to face, out in the heat
Hangin' tough, stayin' hungry
They stack the odds 'til we take to the street
For we kill with the skill to survive

chorus

Risin' up, straight to the top
Have the guts, got the glory
Went the distance, now I'm not gonna stop
Just a man and his will to survive

chorus

The eye of the tiger (repeats out)...

As for my karaoke top five:
5. "Eye of the Tiger" - Survivor
4. "You Ain't the First" - GNR
3. "Like a Rolling Stone" - Bob Dylan
2. "The Night They Drove Old Dixie Down" - The Band (I think this is actually the best song ever written, seriously. And it's insanely fun to sing. And, for those of you who were wondering, "Mr. Tambourine Man" is second.)
1. "Wanted Dead or Alive" - Bon Jovi