Computer RPGs are really just... not RPGs. The role playing factor, kinda important in a Role-Playing Game, is minimized to the point that every game could be called a role-playing one, because you always play the role of the main character.
Besides, the freedom of doing whatever you damn well please is kinda lost, and its always more fun if you can kick the DM between the ribs when something goes bad for you.
LARP? No, I've never tried it, though I'd like to see how it works. Events like that are usually organized somewhere on the other side of Croatia, so it's a bit of a problem getting there. Not that Croatia's a big country. I'm to blame, I guess.