What are good songs to sing for a talent show?

Question:

What are good songs to sing for a talent show?

I am a freshmen in highschool and i really need a good song to blow the judges (that say who gets to be in it and who doesnt) so that they will actually consider a freshmen. what are good songs? i have a rang from an a flat (below middle c) and a high A, so about a two octave range. thank you soo much for any help!

Best Answer - Chosen by Asker: The First Noel. Adlib it huney!