Here's a quick look at the 16 contestants who will be competing for Big Brother 9's $500,000 grand prize:

- Adam, 29-year-old public relations manager from Cherry Hill, NJ who currently resides in Del Ray Beach, FL

- Amanda (pictured), a 23-year-old paralegal from Fridley, MN

- Alex, 24-year-old DJ company owner from Staten Island, NY

- Allison, a 28-year-old pharmaceutical sales representative from Boston, MA

- Chelsia, a 21-year-old college student from Cedar Falls, IA

- Jacob, a 23-year-old electrician from Dallas, GA

- James, a 21-year-old from Sarasota, FL who CBS claims is currently "riding bicycle around the world"

- Jen, a 26-year-old bartender from Columbus, OH

- Joshuah, a 25-year-old advertising media buyer from Dallas, TX

- Matt, a 23-year-old roofing foreman from Charleston, MA

- Natalie, a 28-year-old bikini barista from Salem, OR

- Neil, a 29-year-old realtor from Los Angeles, CA

- Parker (pictured), a 26-year-old paparazzo from Northridge, CA

- Ryan, a 27-year-old college student from Columbus, OH

- Sharon, a 23-year-old realtor from Olathe, KS

- Sheila, a 45-year-old single mom and former Penthouse model from Memphis, TN who currently resides in Reseda, CA

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.