The boys head to a comic book convention dressed as Star Trek: The Next Generation characters on The Big Bang Theory. "The Bakersfield Expedition" is the 13th episode of the show's sixth season.
Added:

The Big Bang Theory Season 6 Episode 13 Quotes

Penny: If Harry Potter's wand can make decisions, why can't Thor's hammer?
Amy: Ok, if you're going to start comparing wands and hammers, I can't even take you seriously.

Oh, this is the best. You have booze with breakfast on a Tuesday, you have a problem. You do it on the weekend, you have brunch.

Penny