Reginald VelJohnson (Carl Winslow)
In addition to playing the Winslow family patriarch on Family Matters, the 63-year-old actor is known for starring as LAPD Sgt. Al Powell in the Die Hard films. He is now appearing on the TBS sitcom, Clipped.
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Can you believe it's been 17 years since Steve Urkel caused mayhem with the Winslow's on Family Matters?
Click through the gallery above to see the show's cast — including Reginald VelJohnson, Jaleel White and more! — then and now.