Yea if it had to be only one TK - if you are a strong enough TK you can lift yourselff which is like flying, if you have enough control you can stimulate prostate/vagina/penis through pants anytime someones sees you and you want them to think dirty thoughts. And you can brain any asshole that bugs you from behind if you are in trouble. It's a very versatile power.

Oh oh! Embarrassing obnoxious coworkers but unzipping their fly at social functions/business mettings, or making them spilll coffee on themselves!

Yeah the levels to which the power could be taken.