Enough babbling. Here are my incoherent suggestions.
1. Born Ruffians.
Aw, they're so adorable. I wrote about them previously- here & Pix has as well - here. Plus they write ace songs and call them things like Kurt Vonnegut. I have a Kurt Vonnegut tattoo so I guess they feed into my annoying pretentious hipster side. Actually that probably turned you off. Just have a listen.
2. Mystery Jets
Everyone knows that Young Love song, but even though that was a very sweet song I liked them a lot better when one of their Dads was in the band (2005-06-ish).
3. N*E*R*D
I haven't seen them live before, but this will be AMAZING when you've ingested one too many substances. I'm sure they'll have the best time slot, right before the clock strikes 12. It wouldn't let me embed my fav vid Lapdance with all the hot chicks with their boobs out, but you can see the edited version (lame) - here.
Others on the initial line up are:
The Temper Trap | Little Red | Xavier Rudd | Arrested Development | Chromeo | Gyroscope | Trentemoller | Miami Horror | Lightspeed Champion | Shout Out Louds | Jebediah | Oh Mercy
and a bunch of others.