Clear DayHey, small groups!This weekend Denver area papers carried an offer for 2-4 member "vocal groups" to informally audition for an upcoming Oreo cookie radio ad, putting their twist on "Ice cold milk and an Oreo" to become a finalist contender repping Denver in a runoff with 9 others across the country to take home a $10k cash prize, and meeting American Idol judge Randy Jackson in the process.So . . . why not? Show up Saturday at noon at Denver's Cherry Creek Arts Festival Oreo tent, corner of Third Ave and Detroit St and at least have some fun with this crazy contest.Keep in mind, Oreo's ad agency will have its own criteria for sorting out the potential winner and it quite likely will not be based upon vocal talent and blend. Think Jay Leno sidewalk interviews.Anyway . . .