Useless weapons

So I played Dead Space for the first time there recently. I had a great time with it but one thing that really annoyed me was the ripper weapon, because it's completely useless. It fires a spinning disc that doesn't go nearly far enough and takes ages to actually kill something. Maybe it's a very effective weapon for someone who knows how to use it properly. I, on the other hand, prefer my weapons to be very simple to use, and anyway I didn't have much time to experiment with the ripper due to all the Necromorphs coming out of the ****ing walls!

Then there's the assault rifle in Unreal Tournament 2004, which is the default non-melee weapon that you start off with. I've some extremely fond memories of the Enforcer pistol from Unreal Tournament; it was a reasonably accurate gun with lots of firepower (a gorgeous 25 in damage for one hit) which made every re-spawning player a proper threat. In 2004 we get the assault rifle which has a better fire rate but is less accurate and only takes off 7 in damage with each hit. The time you need to take off half of someone's health is roughly the same as they need to sidle up to you with a flak cannon and a big grin.

So enough ranting from me: in all your gaming experience what were the most useless weapons you had the bad luck to pick up?