Corrected entry: In the scene where the X-men's jet had just gotten hit by the missile, and Rogue is thrown from the plane, Nightcrawler warps out and grabs her, then warps back into the plane. Doesn't he later say in front of Cerebro that he can't warp to places he can't see? I don't think he possibly could have seen into the plane from below and behind it.
J I Cohen
8th Dec 2003
Correction: It's more that he has to know it's safe to warp to places (ie. know where walls and other objects are), than that he needs to have actual visual contact.
J I Cohen