BRITNEY SPEARS: It's been an eventful year for Britney Spears. (Does she have any other kind?) She has released a single with a risqué title ("If You Seek Amy"), weighed in on gay marriage and had her home violated by a Peeping Tomasina -- all while traveling with her Circus tour. 8 p.m., the Palace of Auburn Hills, I-75 at exit 81, Auburn Hills. 248-377-0100. $39.50-$128. With Jordin Sparks and Kristinia DeBarge.