Pimsleur starts you out learning phrases, greetings, etc. Rosetta Stone basically teaches you in the whole, growing up learning a language type of thing. But to watch Raws, you'll probably need to learn a bit of slang, depending on the show, and how old it is. Some of it may seem a bit weird, if you were just starting out learning the language, some sentences would seem shorter, and strange to you.
But to actually learn it, to be able to watch Raws and stuff, I'd suggest getting help from a Japanese person, in exchange for English help. You can learn via tapes and stuff, but it's a lot better to just communicate the language, and pick up on stuff as you go along.
You can get through all the Pimsleur tapes easily, but if you don't have a way to practice it(with someone) you'll forget a good chunk of it easily.
If you want to learn Kana/Kanji, get some paper, the kana part is easy, but you'll go through a good amount of paper, if you don't have a digital language thingy, or any of the DS Kanji games.