Do you remember when we were all terrified of catching swine flu? We also said farewell to the king if pop Michael Jackson and the internet almost crashed because of the increased web traffic.
Lady Gaga- Just Dance
Black Eye Peas- Boom Boom Pow
Cheryl Cole- Fight For This Love
The world's highest grossing film in history ever hit the screens this year- Avatar, but not to be overshadowed we also enjoyed Disney Pixar's Up, Star Trek and the first instalment of The Hangover series.
All change this year! Countdown got new hosts Jeff Sterling and Rachel Riley, Fern Britton quit as This Morning presenter after 10 years on the show and Graham Norton starting his role as Eurovision Song Contest commentator. Diversity stormed their way to first place in Britain's Got Talent and we said goodbye to teletext (RIP!)