Yep.
In the episode "Father's Day" Rose created a cloister bell event, and creatures called the Reapers appeared to clean it up by destroying everything. Rose's dad threw himself in front of the car to fix things but as seen the writers needed to create a plot device to make decisions have meaning. The Doctor's "death" was actually a bit easier to get around as the plot had everyone assuming that the fixed point was the Doctor's death when it really was the Tesseract being shot and burned. But even there the whole "fixed point" device is inserted to make River's choices have meaning.
In the episode "Father's Day" Rose created a cloister bell event, and creatures called the Reapers appeared to clean it up by destroying everything. Rose's dad threw himself in front of the car to fix things but as seen the writers needed to create a plot device to make decisions have meaning. The Doctor's "death" was actually a bit easier to get around as the plot had everyone assuming that the fixed point was the Doctor's death when it really was the Tesseract being shot and burned. But even there the whole "fixed point" device is inserted to make River's choices have meaning.