I've never heard of this weapon before

[SangoProduction]

The Split-Blade Sword is an exotic 1 handed melee weapon that is also a holy symbol that deals 2d6 damage. And confers a -2 to hit, if you lack 15 Dex. (Just.... A generic holy symbol. OK then.)

This seems pretty good. 2d6 tends to be reserved for Greatsword, which is two-handed. You can dual wield these without any fancy shenanigans. I just find it fascinating. Even if the average damage is 7, compared to 5.5 of a 1d10 longsword.
Long have I been made to believe that there aren't any particularly notable exotic weapons except the Orcish whatchamacallit, that dealt 3d6 damage.

Are there any other exotic weapons that you find notable?