The Star Spangled Banner is not an easy song to sing.  Add to that the pressure of having to remember the words in front of thousands of people, and if you're not prepared, the national anthem can quickly turn into disaster.  Here are the top 5 terrible celebrity renditions of the national anthem.

Michael Bolton

Roseanne Barr

Carl Lewis

Kerri Hilson

Last but not least....

Christina Aguilera