Our 2 year old knows the months of the year in Spanish.

 Even if we just have 10 or 15 minutes a day, we take that time and play with our little one with an educational game, we know we're helping so much in her development, we’ve incorporated playing/learning both in english and in spanish, not to mention that we’ve introduced her to sign language as well (very early in her life), which by the way is a great way to start communication with your baby before they start to talk, and it helped us tremendously at feeding time, potty training and she even got to tell us if she was in pain and where it was.