New Sorcerer based gish combo: Persist Ghost Form & Ghost Trap = Charisma replaces Strength.
(arguably, ghost form + ghost touch weapons works, not 100% spelled out in the rules through)Ghost Form grants the Incorporeal Subytype. It's important to obtain the Subtype over simply becoming Incorporeal if you never want to hear someone like Jackinthegreen making up counterspell updates, so use the SpC version of the Spell (12/05 printing) rather than the one in LM (10/04 printing, woot).
Ghost Trap forces Incorporeal Creatures to become Corporeal which per LM's Losing Incorporealness on page 143 your Strength Score now equals your permanent Charisma Score. Now, you're "permanent" charisma can change with Leveling, Templates, and Epic Creatures smacking you around so what effects apply could vary between DMs. The exact wording is;
The now-corporeal creature gains a Strength score equal to its Charisma score (not including any nonpermanent modifiers to Charisma, such as an eagle’s splendor spell). Its incorporeal touch attacks become normal touch attacks (and it uses its Strength modifier on attack rolls unless it has Weapon Finesse).
Me, I'd allow stuff like Inherent, Racial, Age, & Pacts. And could probably be talked into anything without a duration (yep, cloak of charisma +6 works).