I like some Variant of:
Dragonborn Grey Elf
Warblade 10/Eternal Blade 10//Egoist 10/Anarchic Initiate 10
You can change as you like, but the basis is a egoist gish. The synergies of Intelligence and Manifesting in Armor are appealing.
Favored Soul//Sorcerer with prestige classes to taste is relatively simple, and if you say away from DC spells on the Favored Soul side, you can neglect wisdom. Doubles as party "face".
Or maybe
Duskblade 20//Wizard 5/Incantatrix 10/Runecaster 5?
Full BAB; you're a great blaster, controller, buffer, and probably a decent gish in a pinch. Problem is Wizard Casting in armor. Is runecaster considered to be a "dual" PRC? Quick cast and channeling make me happy.
Consider
Wizard 5/Incantatrix 10/War Weaver 5//Archivist 4/Druid 1/Planar Shepard 10/Dweomerkeeper 5? PRC 5
Loses a caster level each but an Incantatrix/Planar Shep is WIN. You could cut the archivist and just go straight druid, but Int synergy and the better casting archivist offers is awesome with planar shepard.
The recyclomancer is cool if you can use action points;
Wizard 5/War Weaver 5/Primal Scholar 5/Recaster 5, flavor your other side as you see fit. Either mix in divine casting or full BAB. Warblade is good, Crusader is good, Wildshape ranger is nifty. In fact, if you can cheese the Spontaneous Summon Nature's Ally casting onto ranger, Wildshape Ranger 5/Planar Shepard 10/Nature's Warrior 5 makes this WTFHAX.
Wizard 5/Incantatrix 10/Metaphysical Shaper 3/Whatever 2 (Fatespinner?)//Factotum 20
Metaphysical Shaper is a beauty from Book of Erotic Fantasy, we're talking Stilton cheese here.
This has a good Int synergy and BREAKS action economy with factotum. You have a grab bag of skills and full casting just to drive the point home. Works well as a blaster with the metamagic bonuses from Incanta and Meta, you lay down control first round and proceed to BURNINATE with spells until you get books thrown at you, run out of inspiration points, or simply get bored of casting spells. Just to give the finger to opponents, you can break SR with Factotum and break DCs with Fatespinner.
The key to optimizing gestalt is GET TIER 1 CASTING and from there get THINGS THAT HELP THAT CASTING. Everything else is secondary. If you feel like you wanna melee, go for divine casting for Divine Power or natural full BAB; either is useful.
Edit:
starting at level 2 and using the pathfinder races. i was thinking eather a Melee monster abusing warhulk and frenzy berserker or bear warrior or a shadowcraft mage like gnome (sub level)
wizard5 shadowcrafter 5 shadowcraft mage 10//scorcerer5 incantrix 10 x5
Try Changeling Full BAB 5/Warshaper 5/Frenzied Berzerker 10; can be fun.