Watch the iconic dream sequence where Sheldon's Spock action figure comes to life:

This was Leonard Nimoy's first guest role on the show. He had previously refused on-camera appearances but agreed to this voice-over role.

While the guys initially refuse to open the toys to preserve their value, Sheldon is haunted by the voice of his Spock action figure in his dreams, urging him to play with the transporter.

Amy Farrah Fowler does not appear in this episode; the actress Mayim Bialik was away promoting her book, Beyond the Sling .

To thank Leonard and Sheldon for letting her eat their food for free, Penny buys them two vintage, "mint-in-box" Star Trek transporter collectibles.

To cheer Raj up after his failed date, Howard and Bernadette give him a Yorkshire Terrier puppy . Raj names the dog Cinnamon, who becomes a recurring "love interest" in his life.

After giving in to "toy logic," Sheldon opens his gift and accidentally breaks it. He attempts to secretly swap his broken one for Leonard’s unopened box, but is eventually consumed by guilt (and another dream involving a Gorn).