Corran cannot generate telekinesis on his own. He has shown the ability on multiple occasions to absorb many different forms of energy, Force included, and redirect it. With only six weeks of training he was already capable of redirecting a huge explosion (in I, Jedi when he was fighting the gang members). Although his offense is lacking, he would have no problem defending himself.
@Gideon: There are several reasons that I think Corran could defeat Dooku if they fought. Mainly it comes from reputation though rather than actual feats; which is sketchy, I know. As far as actual feats, the most important I think is his victory over Shedo Shai. I'm also taking into account that Dooku fought very few legitimate melee battles. Horn fought huge numbers of them, especially during the Vong War. The reputation part leans more to him being the counter for Kyp in the Order as the top dogs behind Luke. I know it isn't a ton to go off of, and I am very biased towards Horn (he's been my favorite SW character since I first read I, Jedi probably ten years ago) but I think it's enough.