Tusk comes courtesy of Kevin Smith, a director that I find more interesting as a media personality than as a director. The last film of his I saw, Red State, I recall being disappointed over because it advertised itself as one thing–a horror film–when it was actually quite another–essentially a thriller about religious zealots.
His most recent effort appears to be vaguely similar to Stephen King’s Misery, in that someone (Justin Long) is held captive by a nutcase, though in this case it seems that the protagonist is less interested in breaking bones than changing the very form of his captive.
Into a walrus, by surgical means, if the trailer is at all accurate.
Looks like fun.