TK's not terribly useful; there's only a few parts in the game where the treasure is inaccessible except with TK... and usually, the treasure's nothing but a bunch of gems anyway. Lockpick will work in the one instance where TK is needed to finish a quest.
Don't bother with Pickpocket. You can turn into a giant spider with the Spider statue and kill the NPC you need to pickpocket for free.
Other fun skills:
Poison Cloud (1-2): You can't aim this at a friendly character... but you can aim it near them. Since you're not technically attacking with it, you can poison people to death relatively quickly with this skill. It doesn't do very much damage, but it's hilarious to lob this spell into a crowd of civvies and make them run around with blue numbers flying out of their skulls. >:)
Pretty useless against monsters, though.
