Graduation (Friends Forever) - Vitamin C
Good Riddance (Time of Your Life) - Greenday
Because You Loved Me - Sarah McLachlan?
Deliver Me - Sarah Brightman
Song Instead of a Kiss - Alannah Myles
Crash and Burn - Savage Garden (sometimes)
Here I Am - Bryan Adams
Boys of Summer - DJ Sammy
Summer of 69 - Brian Adams
Slipped Away - Avril Lavigne

Thats all I can think of for now.