Alan Zenuk/USA Network/NBCU Photo Bank
The other star of the seminal 1999 teen rom-com She's All That showed up on Psych to play Gus and Shawn's nerdy friend Dennis in the one and only time we've ever heard of this so-called friend—the season five episode, "Not Even Close...Encounters."
As a child, he was an expert on UFO's and other such nerdery. As an adult, he's hot and athletic with an equally hot wife, and has a secret room in which he keeps his shrine to all the best sci-fi that has ever lived, including LaVar Burton's glasses from Star Trek and Colonel Adam's helmet from Battlestar Galactica. It was a nerdy '90s girl/guy's dream come true and it was beautiful.