I saw both 'I Killed my Mother' and 'Hearbeats in Berlin (in the original Quebecois French with Parisian French subtitles, no less!), and definitely preferred his second film to his debut effort, which I thought was overpraised, especially by Quebec media, which gave the impression that the film was THE sensation at Cannes that year. A few other problems aside, I found Anne Dorval's performance in the first film came dangerously close to caricature, and thought that perhaps Dolan was a little too in awe of his leading lady, whose overacting he should have reined in a bit. I also felt that the resolution to 'I Killed my Mother' was (perhaps) a bit of a copout. But 'Heartbeats' is an improvement; no sophomore slump, but hardly perfect. I have hope for his future films.