Then: Tahj Mowry, who was five at the time, got his start as Michelle's friend Teddy on 'Full House' before playing the child genius T.J. Henderson in 'Smart Guy'

Now: Mowry provided the voice of Wade for 'Kim Possible.' Tahj (the younger brother of twins Tia and Tamara Mowry, just fyi) is currently working on the ABC Family show 'Baby Daddy' and recording music. Here is a video of a song by the Boom Boom Satellites, featuring him and Flo Rida, who is, depressingly, the best part of the song.