First off let me thank JPOD101 since it's the best thing for learning japanese since sliced bread or being kidnapped by the japanese.
The amount of material is just wow.... I have been studying it like for what, a year or so now? - I listen to it on the bus mainly, or whenever I have to wait for something, and usually amount to 40mins-1 hour per day on averange - this may not seem like much but considering I do this (well, there are exceptions sometimes) but usually every day of the week and I'm still in the beginner material!! just the the Beginner Season 1 - wow, 170 lessons, it's like a great treasure chest only there is japanese inside.
I started off learning Japanese with Pimsleur - some accuse it of being boring but I found it quite nice, but even so the 90 lessons in Pimsleur get you to more or less to the end of the JPOD newbie series (at least that's the level I was comfortable with - previous stuff seemed too "obvious" and later stuff too hard) - I guess when it comes to speed Pimsleur maybe has the upper hand at teaching the very basics but in retrospect I wouldn't want to learn the entire language like that - the stories in JPOD are way more interesting.
As for kanji/Hiragana/Katakana - there I am a great devotee of heisig's stuff ("remembering the Kanji" and also his "remembering the Kana"), however After learning the firs 300 Kanji in about a month or so with his book I stopped learning it and am now just listening to JPOD since I'm not in Japan and don't plan to go anytime soon and don't feel any burning need to learn Kanji right this instant.
JPOD IS EPIC!!!