Here's the vitamin schedule I'm currently on - my wife had to go out and buy me the biggest Monday through Sunday pill box they had at CVS (and is it ever convenient - I highly recommend!)
Multi-Vitamin (Target One-A-Day male formula)
I take one pill of each vitamin / mineral / herb from this list every day. I have exact measurements for each, if anyone is interested. This is all supposed to have some sort of positive impact on my sperm, according to the book "The Infertility Cure" - the book actually recommends I take twice as much of each vitamin as I am currently taking, but I figure that's overkill. This is an absurd amount of pills to take already, and the theory of "something is better than nothing" has to hold true here. I'm hoping it leads to better / more sperm, and ultimately a pregnancy I don't notice anything different yet. Sperm is still white, sex is still fun. If nothing else, it should aid in overall good health.
Here's the funny part - my wife got a bladder infection a few weeks ago and she thinks it because I'm taking too many vitamins!