Good song for talent show?

I play the guitar a little. like simple chords. i want to play a song on the guitar while singing for a talent show but i don't know which song to sing. i like "leave the pieces" by the wreckers, "kiss me" by six pence none the richer, and "breakaway" by kelly clarkson. is there a fun and easy song that will catch people's attention that's similar to these songs?