I had a similar thought, I was watching it thinking "With all these sports, there must be something I could totally rock at". I always thought modern pentathlon sounded like my thing. Its:
Horse jumping
Pistol shooting
Fencing
Swimming
Running
Which sounds perfect for me because I've ridden horses fore years, I shot guns about five years ago and was marksman first class, I did a little fencing in summer camp, and I do some running. Swimming I'd have to work on.
Of course the big problem is that so many sports are dominated by 16 year olds these days -_-