Director Alejandro Agresti’s The Lake House, based on a South Korean film called Il Mare, takes the premise that launched movies such as Back to the Future and Frequency and asks, "What would a good boyfriend do with these powers?" The powers in this case involve a mystical mailbox that connects two would-be lovers who are living two years apart. Unfortunately, the answer to that question ends up being "Nothing interesting enough to last for almost two hours."
See filmcritic.com for full review