I heard Whistle by FloRida and very nearly cried.
Luther Vandross - Dance With My Father
Martina McBride - Concrete Angel
Tonedeff - Loyal
Gary Jules - Mad World (a bit cliche' perhaps)
Moby - When It's Cold I'd Like to Die
Frank Sinatra - Send in The Clowns
Eminem - Going Through Changes
Pink Floyd - Mother
There's others of course, but those are off of the top of my head.
YouTube's audio quality does absolutely no justice to this song, but this one made me cry today when I was watching it on Blu-Ray. I've seen the BD (and heard the CD) many times before so it wasn't even my first reaction to this performance. Jeff Beck continues to amaze me.