Character's already built. He just needs one extra feat used up which we're hoping can use his insane CHA to good use.
Character is a bard 14/half-elf paragon 3/psion 1/marshal 1/warlock 1. The character was built solely to diplomance. His unrolled, unmodified checks for Bluff, Diplomacy, and Intimidate is +65. With spells, and other modifiers, it's +101 before rolling.