In the premiere of its 14th season, South Park decided to take the time to address the Tiger Woods scandal that happened during the hiatus. As usual, the show makes some refreshingly insightful commentary on the scandal, as well as the deeper seated issue of infidelity and "sex addiction".
To sum up: most men in a position of power and wealth would have the desire to have affairs with as many women as possible. There is really no mystery why they would want to.
All in all, a really solid episode, especially since the show has been a little off and on in recent seasons. The South Park Studios site doesn't have an embed option, so you'll just have to watch it here.
Looking forward, the show will celebrate its 200th episode on April 14th, and for further reading I would suggest this recent New York Times interview with creators Trey Parker and Matt Stone.