mentioned by Sheldon
the guys buy the time machine prop on eBay
Sheldon mentions Captain Kirk and the Romulans.
The guys buy the time machine from the movie of the same name. The first stop Sheldon wants to make is the stardate of this episode to use the cloaking device stolen by Kirk. He unfortunately misstates the pre-Federation date of January 10, 2328, This episode takes place in 2268.
Sheldon says "none shall pass"
Raj offers his Millenium Falcon toy and Leonard has a Darth Vader voice altering device.
Leonard mentions it sarcastically when mentioning the time machine
Sheldon mentions it to cheer up Leonard
Leonard threatens to remove a collectible Geordi action figure from its original packaging
Subject of a $2,000 clue in the category "Direct TV"
Sheldon dreams of Morlocks