Main Categories:
Album Of The Year:
- Doo-Wops & Hooligans (Bruno Mars)
- 21 (Adele)
- Born This Way (Lady Gaga)
- some country album (e.g. My Kinda Party by Jason Aldean)
- some rock album (e.g. Foo Fighters - Wasting Lights)
Record of The Year:
- Rolling In The Deep (Adele)
- Someone Like You (Adele)
- Jar Of Hearts (Christina Perri)
- Moment 4 Life (Nicki Minaj & Drake)
- If I Die Young (the Band Perry)
Single Of The Year:
- Rolling In The Deep (Adele)
- Grenade (Bruno Mars)
- Moment 4 Life (Nicki Minaj & Drake)
- Jar Of Hearts (Christina Perri)
- Back To December (Taylor Swift)
Brand New Artist:
- Bruno Mars
- Nicki Minaj
- Jessy J
- Christina Perri
- new country act (e.g. Band Perry?)
- Rebecca Black
Others (of course, only the forum-relevant ones, as I have no clue about Reggae or Classic music

)
Best Pop Solo Performance:
- Someone Like You (Adele)
Best Pop Vocal Album:
- Born This Way (Lady Gaga)
Best R'N'B Performance:
- Grenade (Bruno Mars)
Best R'N'B Song:
- Where U At? (Jennifer Hudson)
Best R'N'B Album:
- Doo-Wops & Hooligans
Best Rap Song:
- Look At Me Now (Chris Brown etc.)
Best Rap Album:
- Pink Friday (Nicki Minaj)
Best Country Song:
- Back To December (Taylor Swift)
Best Country Album:
- Speak Now (Taylor Swift) / My Kinda Party (Jason Aldean)
Best Dance Recording:
- Till The World Ends (Britney Spears)
- E.T. (Katy Perry)
- Hello (Martin Solveig)
- Daft Punk (something from their soundtrack?)
- Born This Way (Lady Gaga)
Of course excluding the "unknown artist that will suddenly win all the categories without a clue" like Norah Jones or sonething...