Here's a fun site about things you can buy for your bachelor party. Some of it's pretty darn funny, and most of it's r-rated(and up), which is always good for a bachelor party. I particularly like the "Boob Mug".
I know, I know, you'd think guys aren't into skin products, but in this ever increasingly metro-sexual male world, guys are become more vain than ever. Jack Black(No, not the actor) makes quality stuff, if you're into that kind of thing. Check out this little gift set deal.