Faramir, of course, expressly forswears taking the Ring when he had the two Hobbits in his and his Rangers' power. Both Gandalf and Galadriel refuse to take the Ring when Frodo offers it to them, albeit under different circumstances. Elrond tries to get Isildur to destroy it, and makes no effort to take it from him by force (a la Sméagol and Deagol).
And there is the lovely scene in the film (lovely to me, I know your mileage varies) where Aragorn closes Frodo's hand over the Ring and sends him off on his way, rather than taking the Ring himself. Of course, that's not Tolkien, but its still a nice scene showing an important character not getting corrupted by potentially possessing the Ring.
Presumably, everyone listed above (and Samwise as well) would eventually be corrupted by the Ring if they had fully taken possession of it. Galadriel says as much for herself. It would have taken some longer to fall than others, but only Bombadil was truly immune. That said, we are starting to wander far from the topic of this thread!
"Change is inevitable. Growth is optional." - DRWolf (after John C. Maxwell)
(This post was edited by Otaku-sempai on Tue, 10:54pm)