One idea for power I'm considering is influence over electric and electronics. So, Emperor Palpatine style lightning attacks for combat, as well as being able to control a computer without even touching it, or (and I realise this would be a villainous use, but it's just an example) making money shoot out of an ATM.
I don't want him to be a nerd though, but still want him to be able to hack into things. I have an idea that the power works in the way that if he wants access to something on a computer, he can just gain access to it, without really understanding how it works. Perhaps at some point there's something he can't gain access to, and has no idea whatsoever why he can't because normally it just works.
I'm open to suggestions, or of course complete opposition to this if it contradicts anything. I don't really know much about the science behind hacking and such, it was just an idea that I had.
Perhaps an idea that when he's trying to access something in a computer or a network, is mind is sent into a physical manifestation of the database that he has to search through, while his body in the physical world is passed out and vulnerable.