Just beat the main quest of Dawnguard with a vampire character. The content itself was okay. Had its good moments (exploring a vampire's spooky old castle + the Soul Cairn) and its, uh, less-than-good moments as well (yo dawg, we heard you like caves, so go and explore this boring cave system for the next hour and a half, kthx) in typical Bethesda fashion, as in, quantity over quality.