How do Glancing Blows work and what has the BAB to do with it?

[karl_k0ch]

I understand that Glancing Blows are dealt when attacking with a two-handed weapon. And it's additional damage to bystanding monsters.

How does the base attack bonus play a role in that?
Wha exact benefit is given by the THF feat line?
How is the damage of glancing blows calculated?

[tihocan]

The wiki has answers to at least some of these questions. Though probably not all of them (I'm not sure).
BAB mostly plays a role:
- to define your attack sequence in the early levels, which has an impact on when glancing blows occur
- to modify your to-hit roll (including glancing blows)

[Corebreach]

I understand that Glancing Blows are dealt when attacking with a two-handed weapon. And it's additional damage to bystanding monsters.

How does the base attack bonus play a role in that?
Wha exact benefit is given by the THF feat line?
How is the damage of glancing blows calculated?
http://ddowiki.com/page/Glancing_blow and its links cover all these.