1.  Firefly-River's dance in "Safe"
2.  Dancing With The Stars
3, American Bandstand
4.  Solid Gold
5.  Fame - the one about the school, not the reality show. 
6.  Scrubs - the "My Musical" episode
7.  Buffy "The Musical" episode (classic stuff)
8.  So You Think You Can Dance? 

1.  Firefly-River's dance in "Safe"
2.  Dancing With The Stars
3, American Bandstand
4.  Solid Gold
5.  Fame - the one about the school, not the reality show. 
6.  Scrubs - the "My Musical" episode
7.  Buffy "The Musical" episode (classic stuff)
8.  So You Think You Can Dance? 
9.  Drew Carey Show