Yeah, 
Here comes the sun.  Doo doo doo doo.  

  Used it as the recessional (is that the word?) at our wedding.  Never fails to cheer me up.
Used the theme from the DiCaprio Romeo + Juliet soundtrack as the processional.  It's called 
Kissing you, and it really moves me.
There are quite a few of Happy Hardcore tracks that get me all amped....
Run to me and
 Sunrize are some prime examples, but there are tons more.
Fiona Apple turns me sultry...I can't help but pout and sing along to most of her stuff.
Now I have 
September in my head.  Or at least, the tune.
<falsetto>
"La de da, da da da remember, la de da, da da da September..."  
