I had it about 10 1/2 years ago at the age of 28, Baumer. Testicular is the most common form of cancer in young men, although it's still pretty rare. I had the form known as seminoma, which is about the best kind to get because it almost always stays contained. I had surgery and about 3 1/2 weeks of radiation just before Christmas of '97. It's scary, no doubt, but the prognosis for testicular cancer is usually pretty good, and cases of recurrence are quite rare.
I'm cancer-free for over 10 years now. Feel free to PM me if you have specific questions and I'll do my best to help. In the meantime, I found this to be a pretty helpful resource. Check out the celebrity page - quite a few baseball players had testicular cancer and are all doing well now: John Kruk, Mike Lowell and some others.
Good luck with everything and try to stay positive!