JamPlay.com is hitting it big in the guitar world. Their website is a membership only service which broadcasts high-definition video guitar lessons. They have brought together guitar instruction with interactivity... even allowing you to ask questions to their video instructors. They feature 45 guitar instructors to give you a selection in teaching methods, which is a big plus.
They teach by "lesson set" instead of just flopping out a ton of small video clips. They start with the very basics like tuning your guitar, finger placement, and basic chords, and move on to finger-picking, palm muting, hammer ons, pull offs, and many more advanced topics as you progress through the lessons. We found this surprisingly good for the overall experience, because you can follow through these lesson sets just how you would with a normal guitar teacher. Biggest thing is, it's cheap as well because they get so many members.
Sample lessons from JamPlay
Watch a few sample lessons from JamPlay befor you decide to sign up and start learning to play guitar.