If you’re trying to learn a somewhat common second language where you live, and you want to supplement / reinforce other learning, I’d suggest changing how you watch television. Instead of watching, say, Stargate (bc someone mentioned it below) in English, watch it with the German soundtrack and English subtitles. You’ll still be entertained, but you’ll be learning as well.

You can also do something similar, usually with more language options, if you borrow movie DVDs from your library.