Episode 65 of "Futurama"
s05e09 The Sting

After arriving at an asteroid field in deep space, Fry, Leela and Bender attempt to collect honey produced by vicious space bees. Leela decides to take a baby queen bee that incidentally kills Fry! While at Fry's funeral, guilt ridden Leela has a romantic dream that causes her to believe that Fry is still alive. As Leela's bizarre dreams continue to develop, she sinks into a much stranger sleep.