Boards
Unintentionally Hilarious Bits in Films
Bonus points if the intention was for the ultimate warming/rending of the heart.
Since it inspired this thread, I will nominate the 'tragic' ass-to-ass scene from Requiem For a Dream, which for me, was the cherry on the cake of an abysmal cinematic ordeal.
In fact, thinking back - all the character fates at the end of that film are unintentionally hilarious.