The first was when George Takei in his role as Hiro's father on Heroes went to get back into his limo and I noticed the license plate was NCC 1701.

The second came while watching Donnie Darko and Donnie is giving his speech about the Smurfs and how Smurfette had been a creation of Gargamel to infiltrate the Smurf village, but the village ultimately turned her good... and sadly, I knew all that detail. I think there was even a trial over her after her girliness drove the other Smurfs into a competitive jealous frenzy.

My friend reminded me of the later smurflings, but I seem to have blocked that out in much the same way I have blocked out the Scrappy Doo years of Scooby, and when Shirley (minus Laverne) moved to California...