A What the Trend (now a HootSuite company) analyzed over 207,518 hashtags to identify the top trending topics of 2011. Along with the big list comes a handful of more focused categories including movies, TV shows and news events.

Top 10 Trending Topic on Twitter 2011
1. Justin Bieber
2. Soccer/Football
3. Lady Gaga
4. NBA
5. Jonas Brothers
6. Christmas
7. Super Junior
8. Britney Spears
9. Japan Earthquake
10. One Direction

TOP 10 Trending US TV SHOWS
1. Glee
2. Saturday Night Live
3. The Vampire Diaries
4. The Jersey Shore
5. 106 Park
6. Grammy Awards
7. Academy Awards
8. MTV VMAs
9. Kids Choice Awards
10. Golden Globe Awards
Top 10 Trending Movies
1. Harry Potter & the Deathly Hallows
2. Harry Potter Series
3. Phineas & Ferb: the movie
4. The Twilight Series
5. Never Say Never 3D
6. Cowboys & Aliens
7. Finding Nemo
8. Batman – Dark knight rises
9. Queen Days of our lives
10. A Fairly Odd movie

TOP 10 Trending news
1. Japan Earthquake/tsunami
2. Royal Wedding
3. Libyan Conflict
4. May 21st/Oct 21st Rapture
5. Osama bin laden
6. Egyptian Protests
7. Venezuelan Protest
8. brazilian Politics
9. Gabrielle Giffords Shooting
10. England Riots