Not really a "board game" but Splendor was an excellent find by my wife a while back, we also play: Sorry, Ticket to Ride, Exploding Cow, Smash-Up, Munchkin...the wife is wanting to get Redneck Life and Trailer Park Wars
What other board games do you play?
Agricola
Puerto Rico
Catan
Risk Legacy
Terra Mystica
Blood Bowl
There are a whole bunch of others that get played as well, but these are the favourites in my group.