I think Burn Notice would be good. It's about a CIA agent who has been "burned" or forced out. He doesn't know why but, while he's trying to figure it out, he's working as sort of a private detective. Well, not really a private detective but, a guy who know how to get stuff done. So, he's involved in a lot of difficult situations. It's pretty action packed, good, interesting stories, great characters. I really enjoy it.
Okay, this one is violent, which I usually can't handle, but the acting, writing, and directing are so excellent that I make an exception--The Wire. DH and I both love it--many critics consider it the best television series of all time, with good reason. We also both loved Six Feet Under. I'm fairly certain that both have Spanish subtitles available on the DVDs.