Captain America Vol. 2: Red Menace Ultimate Collection by Ed Brubaker and others
Picks up where Captain America Vol. 1 left off (duh). An action packed continuation of the Captain America story, Crossbones being a jerk as well as more back story about Bucky. A quick bridge over to the next compilation (which I'm dying to read). Obviously if you like Cap or are interested in more about Cap, Bucky, Crossbones, etc. pick this one up!