[_Tom_]

I'm sure there's tonnes more, but from the top of my head:

Primary School
Cheeky Girls - Cheeky Song (Touch My Bum)
S Club 7 - Reach
Aqua - Barbie Girl
Steps - Tragedy
Busted - Year 3000
Bewitched - C'est La Vie
Kylie Minogue - I Just Can't Get You Out of My Head
Cher - Believe
Shania Twaine - That Don't Impress Me Much

Secondary School
Rihanna - SOS
Rihanna - Umbrella
Rogue Traders - Voodoo Child
Gnarles Barkley - Crazy
DJ Casper - The Cha-Cha Slide
Beyonce - Irreplaceable
Nelly Furtado - Maneater
Black Eyed Peas - Shut Up
Black Eyed Peas - Pump It
Justin Timberlake - Sexy Back
NeYo - So Sick
Akon - Lonely
Lady Gaga - Poker Face
Lady Gaga - Just Dance
Lily Allen - Smile
Lily Allen - The Fear
Scissor Sisters - Don't Feel Like Dancing
MIKA - Grace Kelly

Uni
Psy - Gangnam Style
Nicki Minaj - Starships
Macklemore - Thrift Shop
Beyonce - Love On Top
Flo Rida - Good Feeling
Carly Rae Jepsen - Call Me Maybe
David Guetta and Sia - Titanium
LMFAO - Sexy and I Know It
Gotye - Somebody That I Used to Know
fun. - We are Young
Britney Spears - Till The World Ends
will.i.am and Britney Spears - Scream and Shout
Pitbull and Kesha - Timber