Wow, whole lot of music snobbery/bashing in this thread.
I know, it's really hard to ignore too...
*fights the urge to yell at Mop_it_up*
Anyway, I'm not that excited about this game. I enjoy The Beatles music as much as the next guy (not counting Ned Flanders types..) but like Rize said, their songs aren't all that difficult. I'll probably pick the game up if i can ever finde it cheap/used, but i don't see myself playing it all that much. I don't have many friends who are into the Beatles and the real appeal of this game would be playing with a group, or at least one other player who you can harmonize with.
Oh and like Rize said, easiest way to learn to play guitar is get yourself a book of tabulature.