Warning: This is not the Darth Vader you should get for your 5-year old son. Rather, this is the Darth Vader you should get for yourself. This Vader is eerily realistic and incredibly detailed for a 3' 3/4-inch figure. The cloth cape and leg coverings flow very nicely. Moreover, this is the FIRST time the helmet comes off in three pieces. The top part comes off first and separates from the face mask. You can then pull the head off to take the breathing device off (not sure why you'd want to do that, but it's actually cool to try). The head is also a very well done likeness of Sebastian Shaw.
However, as I indicated above, this is not a toy for kids. In fact, it seems Hasbro didn't bother trying to make it durable. First, the helmet doesn't clip on and will fall off if you move him much. More upsetting is that Vader's right hand isn't closed enough to grasp the lightsaber. It's actually pretty easy to have him hold it with both hands (left on the bottom, right on top), but it would have been nice to have had more options for posing. Also, you might want to glue down the silver neck chain because it doesn't stay down.
Overall, this is a great figure - for collectors, not kids.