I approve all of the aforeposted applications.
One note though, throwing knives don't tend to work very well, especially on zombies (unless you just stab them in the eye like a regular knife)
The one hit insta-kill from video game lore is fictitious, someone hit with a throwing knife would still take five minutes or so to bleed to death, just like if you'd stabbed them with a regular knife (only thing is throwing knives usually aren't long enough to puncture into the heart/lungs so you have to rely solely on them bleeding out) 
That said, they still would hurt like a bitch if you got stuck with one.