Watch the Bending, Ex 3 online guitar lesson by Larry Carlton from 335 Blues
Here's another couple of useful bending exercises.
In the first exercise, we're in E where every bend returns to the same target note. Each successive bend along the second string here comes back home to the E at the 5th fret.
This is a good way to start using bends melodically, and it also shows you that you can resolve a bend on any note - not just on the note where the bend relaxes.
In the next video, exercise 3 adds a half-step bend into the mix, with a bend from G# up to A.