"blackjack"?

awesome

I shall smite at thee with my full house!-eth

:D couldn't resist.

Back on topic, i know for a fact that it was called sneak attack in 3rd ed, but im not sure about before then. I know it works much the same way in IWD2 (3ed) as it does in BG2 (2.5ed?) however, in NWN (3ed) you would get flanking attacks as well

Well sneak attack leaves something to be desired as well. After all a non-backstab attack from shadows is also possible. The word "backstab" implies that the attack must come from a direction where the attack is not noticed (i.e. from behind) and is as such better despite it does not have to be a stabbing/piercing weapon.
I am too old to be taught new tricks. Frankly there are better RPGs than (A)D&D and I would rather spend my time and energy with those. I do play D&D, but that is only for the atmosphere. For this 2ed rules are superior as I know them inside out and don't have to roll nearly as much (or consult the books).