So, if you want all fun and no brain, Munchkin, Dobble or Smash Up. If you got time on your hands (2 or 3 hours), Talisman is still pretty intense. If you want something brainier, but still fun, 7 Wonders is a quick learn and fun. Rab and his cardboard children features on RPS would be a good pointer for other cool tabletop games.
For console party games, Mario Kart, Rayman Raving Rabbids, good ole Super Bomberman 4 or 5, or even Street Fighter IV will do the trick.