I like the show a lot, and it seems super popular. It won an Emmy for best directing in a drama or something.
It's basically about Congressman Frank Underwood's rise to power, and he stops at nothing to get what he wants. It's kinda corny, politicians are evil and all that, and at points is predictable, but I think the series really picks up towards the second half of the first season, and shit is already hitting the fan in the first episode of season two.