Technically, I loved this film. It's slow paced but well edited, and the cinematography is beautiful and thought out to the smallest detail. The cast is great (River Song! Charlie Bartlett! Katniss!), and the two lead actors do a particularly good job at capturing and holding the viewer's attention.
Like Crazy is the purest snapshot of that first, horrible, gorgeous, all-encompassing love experience. Unfortunately, I found the ending unnecessarily jarring, because it was so very real. Most people watch a film to get away from their own life to a certain extent, and there was no stretch here- nothing to take the viewer away from themselves. Instead, I felt as though I'd been left hanging at the end of a friend's involved story. If I watch it again, I'll make sure and turn it off 4 minutes before the "end."