I have watched three episodes so far, haven't rushed it. Frankly, it hasn't been that gripping to me so far. Good, yes ... but not stellar. Frankly, I find it may be too true to the real world ... which is kinda depressing. This series hasn't really sucked me in yet, yes Kevin Spacey is brilliant ... but the series itself, not so much. Good? Yes. Great? So far, no, but it's only 3 episodes for me. A truly great show I would have watched all of them by now with ease ... but this show doesn't drag me in that greatly. Hell, I started watching Californication 2 weeks ago on Netflix Canada and have caught up to season 6 already. A great, great show.
I'll continue to watch House of Cards, because it's good TV, but I don't see it as great TV yet.