Highlights for me:
White Lies @ Empty Bottle - great club, great sound and cheap beer - and my new favorite band! Awesome set. Meeting White Lies was just awesome. Talked to the guys for a bit and they were the nicest of people.
Radiohead - fake plastic trees/everything in its right place with fireworks (near having an emotional breakdown)
Electric Touch
CSS
Booka Shade
K'naan
Innerparty System
Mark Ronson & Phantom Planet played "California"
Chromeo
Nine Inch Nails
Explosions in the Sky
Foals
Holy Fuck
Perry Farrell (on kidzapalooza stage)
The National (only caught 3 songs - was amazing!)
Office (mostly heard them from the signing tent, but really liked what I heard)
On-The-Fence
Broken Social Scene (nice to see Amy Millan)
Love & Rockets (started out great, but I left a bit disappointed)
The Kills (such a short set! - turns out the heat ended their set early)
Kanye
The Enemy UK (theyll be awesome in a club)
Your Vegas
Okkervil River
Does It Offend You, Yeah? (were awesome by the middle/end of it)
Rogue Wave
Brazilian Girls
Who I will never see again:
Iron & Wine (i slept through most of that set - it was god-awful, boring, sleep inducing)
Black Kids
Louis XIV
Manchester Orchestra
Other things I liked:
food/drink prices
mango/strawberry banana smoothie
polite/friendly airport security
Zipcar
driving around Chicago
Wicker Park/Ukranian Village
Silversmith Hotel
The nice people I met at the festival
Things I detested:
Newark Airport/UAL - I will NEVER fly them again and I hate Newark Airport.
Weather delays going in and out of Chicago
the mean people who felt the need to shove me so hard that i now have bruises all over me (and no this wasnt for Rage Against The Machine - it was at Broken Social Scene and Your Vegas)
Not enough bathrooms/insanely long lines for them
The _long_ wait to get into the festival causing me to miss some of K'naan's set