I need someone that knows the names of a lot of songs!?

what are the names of all the songs in this video!
http://www.youtube.com/watch?v=QpGoVkaof...

In order (or I tried):

"Welcome (Enter The Circus)" by Christina Aguilera
"Bring 'Em Out" by TI
"Club Stuntin'" by The Pack
"Dance, Dance" by Fall Out Boy
"That's Right" by Ciara featuring Lil' Jon
"Walk It Out" by UNK

And I can't figure that last song. Great performance from them!

Theres:
bring em out - ti
fall out boy - dance dance
walk it out - unk