Is my 3 1/2 year old watching too much Dora/Diego.....?

My daughter is fascinated with both of those shows and has learned so much spanish from them that I now watch them so I may understand what she is asking for! I have bought her the dora video games and my husband (who is caucasian like me) teaches her new words to expand her spanish vocabulary. Though Dora and Diego cannot do it on their own, but with a little help from you, your son could become bilingual, which will be helpful in life, especailly in the job force.