I guess the song How Do I Live by Leann Rimes is one of the best... Has been in Billboard Hot 100 for sixty-nine weeks... Wiki Article
Best song ever: Apologize - Timbaland / One Republic. Been listening to that song non-stop for the past few weeks, absolutely love it.
I have sooo many it is really hard to pick however when I read the thread title Changes by Black Sabbath came to mind..
I personally like the compositions of AR Rahman, And my Best song right now is from Agarr Film, Pass Aya Kyon
Running With The Devil - by Van Halen The old original Van Halen.. That is! Or.. Free Bird - by Lynyrd Skynyrd