Of course, trying to predict Weezer's next move has always been comparable to trying to justify the plot of "The Day After Tomorrow." However, what COULD we expect of a band that's been in the game for nearly 20 years and is only now letting the on-stage sparks fly? As a Weezer fan, you of course must wonder, "how long can this go on? Are any of the guys thinking it's time to move on? Is it still…