1. Every time that Steve used his "transition chamber" to change his DNA.
It turned the nerdy Steve Urkel...
... into the super-suave Stefan Urquelle.
2. When Steve made Urkel-bot...
...and eventually had to destroy it.
3. When Urkel was so virile that his kiss made Laura pregnant.
4. When, impromptu, an entire party did the "Urkel Dance" in unison.
5. When Eddie was a creeper and caused a car to crash into a Parisian café.
6. When Carl almost shanked Steve with a carrot.
7. When Urkel built an atomic bomb.
8. The time ventriloquist dummies stole Steve Urkel's soul...
... and tried to suck out Carl's, too.
And then Carl vowed to fight them to the death.
Then the dummies declared war.
But then Carl remembered how to fight...
... and tried to save Steve...
... but, like Brody on "Homeland," Steve was turned.
So Steve sucked out Carl's soul.
9. When Carl and Steve became professional wrestlers.
10. When Laura & Steve led a gun turn-in drive.
If you see any gun violence, squash it!
11. When Urkel had his own "Mortal Kombat" game.
Combo move: the cheese throw.
12. When the Winslows made a rap video.
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