Crowbar (DX)

In Deus Ex and Deus Ex: Invisible War, the crowbar is a melee weapon. It's usually found in maintenance shafts and industrial areas, such as near power generators.

Gunther Hermann seems to show an affinity for crowbars, as seen on a note in the crowbar's description in Deus Ex.

Strategies
In Deus Ex, the crowbar is useful for destroying crates before you get a combat knife. Once you get a combat knife, dump the crowbar because the knife does a very similar amount of damage and it only takes up one space in the inventory, compared to the crowbar's two.

In Invisible War, the crowbar is merely a slight upgrade to the combat knife. If you're using the baton or have the energy blade, don't bother. Otherwise, you should pick it up, if only to make destroying crates a little bit easier.

In-game Description
A crowbar. Hit someone or something with it. Repeat.

 Many crowbars we call "murder of crowbars." Always have one for kombat. Ha. -- Gunther Hermann 

Łom (DX) Łom (DXIW)