I do not want to jynx myself, but for all of you young guys who are going bald and considering trying propecia/rogaine, I'd recommend it.
I am almost 25 and have been on propecia and rogaine for about 3 months....I've noticed a pretty dramatic increase in the overall thickness of my hair, and I have considerable growth so far along the hairline. The shedding has become minimal (maybe 10 hairs in the shower and 10 when styling), which is much different than the 100s I was losing before. The only side I had was watery semen, and that is gone. I'll need to find some pictures of before I started the treatment, and then upload some where I am at now.
Anyways, stick with it - some of us get lucky and do get good results.