Prosecutors filed formal charges Tuesday against O.J. Simpson, alleging the fallen football star committed 10 felonies, including kidnapping, in the armed robbery of sports memorabilia collectors in a casino-hotel room. Simpson, 60, was booked on five felony counts, including suspicion of assault and robbery with a deadly weapon. District Attorney David Roger filed those charges and added five other felonies, including kidnapping and conspiracy to commit kidnapping, according to court documents.