The Soloist has everything it needs to be decent. A true story about a homeless musician and his relationship with an L.A. Times reporter, it's the basic underdog-gets-a-break routine. We've all seen it before, most of us will keep paying to see it again.
It's the second most overused plot in Hollywood, just behind the group-of-inner-city-kids-who-get-a-new-teacher-or-coach-who-at-first-doesn't-fit-in-but-then-leads-them-on-to-great-things routine. These stories are completely predictable but, like a classic comedy routine, we (sometimes) don't care that we know the ending because we (sometimes) enjoy the middle so much.