Madonna - Girl Gone Wild(Single insert) 
Nelly Furtado - Parking Lot(Single insert) 
Britney Spears - Mona Lisa(Single insert) 
Ke$ha - Supernatural(Single insert) 
Britney Spears - Strangest Love(Single insert) 
Maroon 5 - Maps(Single insert) 
boombig:

This box includes:A hard-plastic CD slipcase with'Circus' with all bonus tracks + 3 unreleased tracks'Circus In The Mix' (The Remix Album) A hard-plastic DVD slipcase with'The Circus Starring Britney Spears' Live Concert DVD'The Backstage Pass' DVD SpecialAn exclusive Photobook filled with never before seen photos from the ’Circus’ photohoot3 huge posters signed by BritneyA limited collection of 'Circus Dolls' including ’The Ringleader”, ”The Hot Tamer” & “Hot Ballerina” Dolls
Britney Spears - Unbroken(Single insert) 
Britney Jean (Alternate cover)
Working on Britney Jean: Premium 'Piece of Me' collection.
Britney Spears - Til It’s Gone(Single insert) 
Jennifer Lopez - Live It Up(Single insert) 
Britney Spears - Perfume(Single insert)