iPump offers three exercise levels, called Foundation, Intermediate and Comprehensive, each with three gym workouts. The exercises in each workout target all major muscle groups and include workout-specific intensity charts showing reps, sets and rest intervals.
To make the program more fun, there are 80 videos, with male and female instructors, showing the proper form for the exercises, along with audio coaching and image demonstrations. If you follow along with the videos, they'll keep you in tune with the proper number of repetitions and rests.
As you do the exercises, the software logs the work  and even lets you email the logs to your friends or to a personal trainer or doctor. (The videos are streamed over the Internet, so you'll need either a WiFi connection or good 3G data connection for them to work.)
Of course, if you really want to be pumped up, watch Hans and Franz. This six-minute YouTube video is a classic!