I was channel surfing and came across a Friend's episode where Phoebe has her brother's triplets and then Joey ends up trying to pass some kidney stones.
Even though I had seen this episode before, something about it was rather familiar and then I remembered! There was an episode of Night Court where Mac's wife goes into labor and he ends up in the hospital with appendicitis at the same time.
This little flashback wouldn't have been possible without last week's episode of 30 Rock. Thank you Tina Fey!