I been looking around for a mod pack to help make all the sounds more realistic. From sneaking to reloading, firing of weapons, explosions, bullets hitting different materials, etc.
I found a few and saw their videos and dont know if those videos can do those mods justice. So I'm asking the community on what their opinion is.

Everyone has their own tastes of course, but I'm using http://fallout3nexus.com/downloads/file.php?id=2169, and after that I added http://fallout3nexus.com/downloads/file.php?id=4246.

1 is good. Haven't used 2, but looks good so I think I'll personally try it out. I did find though, that there's an updated version http://www.fallout3nexus.com/downloads/file.php?id=10863 made by someone else (with permission).

Also, http://www.fallout3nexus.com/downloads/file.php?id=12602 is a good mod. http://fallout3nexus.com/downloads/file.php?id=13055 is good for music and http://fallout3nexus.com/downloads/file.php?id=1418 is a good expansion of GNR with lots of extra tracks. Also, http://fallout3nexus.com/downloads/file.php?id=7597 is a nice sound replacement for the Tesla Cannon. Hope this helps! Those are the best that I know of.