The Pittsburgh Penguins sing the Canadian anthem (not normally sung in games involving two American teams) in tribute to 2 soldiers who lost their lives due to terrorist attacks on home soil....
Tenacious D - Tribute
Memorial Tribute to Clay Sturtz
The LG Tribute is cheap and chic
My Tribute Song to Sc4le's Mom
The Pink Floyd Tribute Show (2011) Full- Live From Liverpool
Jimmy Pays Tribute to Robin Williams