Now if only there were a Seth Green lookalike. Via Aaron Goldfarb.
A bit ambitious, but I see the connection. I also wanted to put down Mexico's Giovani Dos Santos and Tia and Tamera from "Sister, Sister," but as awesome as that would have been, the Internet confirms that they don't really look that similar. Via the Guardian's Uruguay-Mexico minute-by-minute report.
Both the grown-up and the kid versions are close enough for me. Via John Marvel.