Chronos's Unalliterative Skillmonkey Guide [3.x]

[Dimers]

Chronos -- if you include Psicrystal Affinity in the list of useful feats, you might put Improved Psicrystal in as well. You gain another of the variety of bonuses, and the crystal gains special abilities as if you're a level higher. This is strictly better than Skill Focus for any skill on this list (or for Great Fortitude or Iron Will), and of course stacks with the standard SF/GF/IW.

I'd also add conceal thoughts to the list of psi powers. Can be cast on others, +10 circumstance to Bluff in some cases, +4 save versus mindreading, lasts for a minimum of one hour for a single power point.