Full House
This show may have launched the infamous Olsen twins, but those babies weren't at fault for taking this sitcom from cutesy family sitcom to a painful-to-watch shadow of its former self. That honor belongs to the introduction of a second set of twins, the product of former ladies man Uncle Jesse and his wife Aunt Becky. Those twin boys were just annoying and clearly a desperate attempt by producers to maintain the show's "aww" quotient once the Olsens had outgrown their toddler years.

Murphy Brown
She may have started a battle against the then Vice President Dan Quayle (who may or may not have understood that this was a fictional TV show) by being a professional single woman who decided to have a baby on her own, but immediately after the birth of little Avery, this once edgy (for its time) show about an ambitious broadcast journalist changed for the worse. Suddenly, it became focused on Murphy's personal life instead of her career, which was originally what made the series compelling. Don't even get us started on when Avery grew up and became Haley Joel Osment. We see a dead series.

Beverly Hills, 90210
It didn't kill the show, but it sure killed a character when former virgin Andrea got pregnant in her freshman year of college and decided to keep the baby. This soapy drama went from being about self-involved high school students to focusing way too much time one a failing marriage and childcare problems. We weren't sad at all when Ms. Zuckerman packed up and moved to the East Coast.

Mad About You
It was inevitable for a show that centered around a married couple that the subject of a baby would come up. But the funny bickering between Paul and Jamie had already started to get tiresome by the time they brought a daughter on to the show. They made matters worse by saddling that girl with the name Mabel. Poor girl. Poor viewers.

Growing Pains
It was bad enough that this show felt the need to add an infant to a family that already had three children, but it was downright awful when that child had rapid aging syndrome and went from diapers to second grade overnight (or over the summer hiatus). Did they think no one would notice?

7th Heaven
Not that this show was ever particularly good, but when they started adding babies all the time, it really got to be too much. Not one set of twins, but two sets of twins by different members of the family at the same time? Not only annoying, but downright unbelievable. They should have taken a lesson from a classic TV show and learned that seven (or eight) is enough.

Family Ties
Similar to other classic sitcoms, Family Ties tried to keep the cuteness factor going when the youngest child got too old. So they added a tiny new member to the family in the form of Andrew. While we liked Alex's (Michael J. Fox) interaction with his suddenly post-toddler-aged brother, the addition just seemed so unnecessary since the show was all about teens anyway.

Angel
Talk about kid bring a show down, the arrival of Connor (the rare offspring of two vampires) dragged this series straight to hell, literally. This baby was nothing but trouble and was abducted to another dimension only to return as an obnoxious teenager. It took two seasons of Mad Men before we finally forgave Vincent Kartheiser for his involvement in this mess.

Roseanne
When actresses get pregnant, it isn't always wise to write that into the show's storyline. In fact, while we laugh at women hiding behind gigantic purses or houseplants to hide baby bumps, that's far better than adding an unnecessary character to a show. Roseanne decided to add a fourth kid to its household and to name him, of all things, Jerry Garcia (after the legendary Grateful Dead front man). We were already getting disenchanted with this show at that point, but the arrival of little Jerry (who was supposed to be a girl and then changed to match Roseanne's real-life child) sped up the show's demise - which is saying a lot considering they used to change the actress playing Becky back and forth without any repercussions.

Dexter
We thought that John Lithgow was the new addition that was going to annoy us during the last season of Dexter, but we were wrong. Instead, it was the arrival of Harrison that got under our skin -- or rather, Rita's increased nagging, which was brought on by having the baby. Thankfully, the producers seem to have found a way to solve this problem, so hopefully everything will be back on track for next season.