Complex sentence: He appears again in season 20's "Eeny Teeny Maya Moe" where he was to perform a surgery on Moe, but as usual, screwed up although he died in The Simpsons Movie when a large bit of the dome fell on his body.
Split into simpler sentences: He appears again in season 20's "Eeny Teeny Maya Moe" where he was to perform a surgery on Moe, but as usual, screwed up. He Died in The Simpsons Movie when a large bit of the dome fell on his body.