Captain America: Winter Soldier, Ultimate Collection, by Ed Brubaker, et. al. Graphic Novel.
If you liked the recent Captain America movie, this is the place to go next. Not a sequel, but this story takes place in the same universe as the movie, and is a great "jumping on" point into the world of Cap's comics.
We all know that Bucky and Captain America both died, but Cap was actually frozen and thawed out years later. But .... what if the same thing happened to Bucky, too? And what if he was found not by the Avengers, but by the Soviets?
That is the question that Ed Brubaker poses in this relaunch of the title from a number of years ago -- this collection features the entire story, all thirteen issues. Bucky becomes a super-agent for the Soviets, known as the Winter Soldier. His exploits are legend on both sides of the Iron Curtain, and as it becomes clear who the WS really is, Cap and the S.H.I.E.L.D. operatives wrestle with the implications.
Most of the art is excellent here, with different artists doing the present-day and WW2 pages. This gives the flashbacks a true sense of being from another age. There are a few fill-in artists along the way whose work seems out of place when the entire story is read as one piece of work.
I have not read Cap in a long time, but found this is a very accessible and enjoyable read.
The guys at Geek Show covered this as their "book of the month" a few weeks ago, and put out a terrific podcast episode about it.