On Monday’s Ellen, Janet Jackson announced that she will embark on her Rock With U World Tour later this year to promote her 2008 LP, Discipline-and she wants your feeback! Visit Janet’s Myspace and let her know what tracks you would like to hear performed on her live trek around the Globe. Or you can call (323)622-8139. Check Ms. Jackson performing her 1989 hit “Rhythm Nation” on the air.