CBS has issued a casting call for the fifth series of Big Brother in America.

The series will air this summer, and co-producer Arnold Shapiro says there will be many new features to keep viewers hooked:

"Allison [Grodner, co-producer] and I are excited about Big Brother 5, and the new surprises and twists that await this summer’s HouseGuests. The one constant we can promise participants and viewers alike is: expect the unexpected. We’re seeking the most outgoing, competitive, quirky and charismatic players we can find."

Application details can be found on the CBS website. Completed forms must be accompanied by a two-minute videotape and two colour photos. All applications must be in by April 9.