Lara Croft Workout
Men's workout http://coachgeary.com/
Not suggesting it for women, but men who are used to working out or just people who know what they're doing and how not to injure themselves in exercise
Special Forces Workout
Navy SEAL Workout
A walkway through hanging gardens.
Mix some cardio into your strength training for a short and intense workout. These are great body weight exercises!
300 Workout for the morning