'The Big Bang Theory' Season 7 Spoilers: 'Lost' Actress Tania Raymonde to Play Raj's New Love Interest in Valentine's Day Episode

Unfortunately, fans of the hit comedy series "The Big Bang Theory" will have to wait an extra week for a new episode to premiere on Jan. 30. Little to no information has been revealed about the upcoming episode, except for its title, "The Convention Conundrum."

However, a number of hints have been dropped about the show's Valentine's Day episode. According to TV Guide, Amy and Sheldon will take the next step in their relationship during a trip to Napa Valley. "They have a very real moment and it means a lot to them and to anyone who's a fan," said executive producer Steve Molaro, adding that he became emotional during the shoot.

But Amy and Sheldon's relationship won't be the only romantic focus on the show since Raj will also find love. TVLine reports that "Lost" star Tania Raymonde will make a guest appearance on "The Big Bang Theory" as Raj's new love interest. Raymonde will debut in next month's Valentine's Day episode playing a cute and somewhat surly veterinarian who ends up taking care of Raj's sick dog Cinnamon.

But, if that wasn't enough to get you excited for about the upcoming episodes, it was also recently announced that "Star Wars" stars James Earl Jones and Carrie Fisher will both guest star on the popular CBS series playing themselves.

Fisher portrayed Princess Leia in the original "Star Wars" films, while Jones is noted for being the voice of Darth Vader. Molaro and the show's other executive producer Bill Prady broke the news about the "Star Wars" actors to TVLine at the Golden Globes red carpet, also confirming that both actors will also cross paths with Sheldon.

"The guys for the first time get locked out of getting Comic-Con tickets and they're not going to be able to go," explains Molaro to TV Line. "So Sheldon sets out to start his own new comic book convention and is hell-bent on getting an A-list panelist. If he gets one, it will be a real convention, and he sets his sights on the voice of Darth Vader."

"The Big Bang Theory," airs Thursdays at 8 p.m. EST on CBS.